Finding the Fourth Proportional to 21,131.94, 29,155.50 and 14,059.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,131.94 : 29,155.50 = 14,059.56 : x
2. Step 2: Convert to fraction form
   21,131.94/29,155.50 = 14,059.56/x
3. Step 3: Cross multiply
   21,131.94x = 29,155.50 × 14,059.56
4. Step 4: Simplify right side
   21,131.94x = 409,913,501.58
5. Step 5: Solve for x
   x = 409,913,501.58/21,131.94
6. Step 6: Final answer
   x = 19,397.82