Finding the Fourth Proportional to 21,059,041.91, 29,061,670.14 and 12,357,359.51

Step by Step Solution

1. Step 1: Write the proportion equation
   21,059,041.91 : 29,061,670.14 = 12,357,359.51 : x
2. Step 2: Convert to fraction form
   21,059,041.91/29,061,670.14 = 12,357,359.51/x
3. Step 3: Cross multiply
   21,059,041.91x = 29,061,670.14 × 12,357,359.51
4. Step 4: Simplify right side
   21,059,041.91x = 359,125,505,735,703.69
5. Step 5: Solve for x
   x = 359,125,505,735,703.69/21,059,041.91
6. Step 6: Final answer
   x = 17,053,268.96