Finding the Fourth Proportional to 12,128.37, 16,741.56 and 7,655.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,128.37 : 16,741.56 = 7,655.04 : x
2. Step 2: Convert to fraction form
   12,128.37/16,741.56 = 7,655.04/x
3. Step 3: Cross multiply
   12,128.37x = 16,741.56 × 7,655.04
4. Step 4: Simplify right side
   12,128.37x = 128,157,311.46
5. Step 5: Solve for x
   x = 128,157,311.46/12,128.37
6. Step 6: Final answer
   x = 10,566.74