Finding the Fourth Proportional to 10,564.72, 15,863.28 and 8,598.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,564.72 : 15,863.28 = 8,598.16 : x
2. Step 2: Convert to fraction form
   10,564.72/15,863.28 = 8,598.16/x
3. Step 3: Cross multiply
   10,564.72x = 15,863.28 × 8,598.16
4. Step 4: Simplify right side
   10,564.72x = 136,395,019.56
5. Step 5: Solve for x
   x = 136,395,019.56/10,564.72
6. Step 6: Final answer
   x = 12,910.42