Finding the Fourth Proportional to 12,385.08, 17,099.16 and 8,607.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385.08 : 17,099.16 = 8,607.12 : x
2. Step 2: Convert to fraction form
   12,385.08/17,099.16 = 8,607.12/x
3. Step 3: Cross multiply
   12,385.08x = 17,099.16 × 8,607.12
4. Step 4: Simplify right side
   12,385.08x = 147,174,522.02
5. Step 5: Solve for x
   x = 147,174,522.02/12,385.08
6. Step 6: Final answer
   x = 11,883.21