Finding the Fourth Proportional to 21,551,155.89, 29,736,679.23 and 12,732,043.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,551,155.89 : 29,736,679.23 = 12,732,043.02 : x
2. Step 2: Convert to fraction form
   21,551,155.89/29,736,679.23 = 12,732,043.02/x
3. Step 3: Cross multiply
   21,551,155.89x = 29,736,679.23 × 12,732,043.02
4. Step 4: Simplify right side
   21,551,155.89x = 378,608,679,228,300.44
5. Step 5: Solve for x
   x = 378,608,679,228,300.44/21,551,155.89
6. Step 6: Final answer
   x = 17,567,905.92