Finding the Fourth Proportional to 12,435.53, 17,156.81 and 7,650.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,435.53 : 17,156.81 = 7,650.55 : x
2. Step 2: Convert to fraction form
   12,435.53/17,156.81 = 7,650.55/x
3. Step 3: Cross multiply
   12,435.53x = 17,156.81 × 7,650.55
4. Step 4: Simplify right side
   12,435.53x = 131,259,073.32
5. Step 5: Solve for x
   x = 131,259,073.32/12,435.53
6. Step 6: Final answer
   x = 10,555.17