Finding the Fourth Proportional to 21,410,026.24, 29,523,502.72 and 12,706,517.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,410,026.24 : 29,523,502.72 = 12,706,517.32 : x
2. Step 2: Convert to fraction form
   21,410,026.24/29,523,502.72 = 12,706,517.32/x
3. Step 3: Cross multiply
   21,410,026.24x = 29,523,502.72 × 12,706,517.32
4. Step 4: Simplify right side
   21,410,026.24x = 375,140,898,658,747.12
5. Step 5: Solve for x
   x = 375,140,898,658,747.12/21,410,026.24
6. Step 6: Final answer
   x = 17,521,739.32