Finding the Fourth Proportional to 15,507.24, 21,404.72 and 14,713.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,507.24 : 21,404.72 = 14,713.72 : x
2. Step 2: Convert to fraction form
   15,507.24/21,404.72 = 14,713.72/x
3. Step 3: Cross multiply
   15,507.24x = 21,404.72 × 14,713.72
4. Step 4: Simplify right side
   15,507.24x = 314,943,056.76
5. Step 5: Solve for x
   x = 314,943,056.76/15,507.24
6. Step 6: Final answer
   x = 20,309.42