Finding the Fourth Proportional to 21,801,221.25, 32,670,983.31 and 12,090,105.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,801,221.25 : 32,670,983.31 = 12,090,105.72 : x
2. Step 2: Convert to fraction form
   21,801,221.25/32,670,983.31 = 12,090,105.72/x
3. Step 3: Cross multiply
   21,801,221.25x = 32,670,983.31 × 12,090,105.72
4. Step 4: Simplify right side
   21,801,221.25x = 394,995,642,194,255.56
5. Step 5: Solve for x
   x = 394,995,642,194,255.56/21,801,221.25
6. Step 6: Final answer
   x = 18,118,051.17