Finding the Fourth Proportional to 21,633.16, 32,437.32 and 8,470.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,633.16 : 32,437.32 = 8,470.12 : x
2. Step 2: Convert to fraction form
   21,633.16/32,437.32 = 8,470.12/x
3. Step 3: Cross multiply
   21,633.16x = 32,437.32 × 8,470.12
4. Step 4: Simplify right side
   21,633.16x = 274,747,992.88
5. Step 5: Solve for x
   x = 274,747,992.88/21,633.16
6. Step 6: Final answer
   x = 12,700.32