Finding the Fourth Proportional to 10,407.72, 15,597.54 and 5,217.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,407.72 : 15,597.54 = 5,217.24 : x
2. Step 2: Convert to fraction form
   10,407.72/15,597.54 = 5,217.24/x
3. Step 3: Cross multiply
   10,407.72x = 15,597.54 × 5,217.24
4. Step 4: Simplify right side
   10,407.72x = 81,376,109.59
5. Step 5: Solve for x
   x = 81,376,109.59/10,407.72
6. Step 6: Final answer
   x = 7,818.82