Finding the Fourth Proportional to 12,129.16, 16,735.26 and 7,411.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,129.16 : 16,735.26 = 7,411.72 : x
2. Step 2: Convert to fraction form
   12,129.16/16,735.26 = 7,411.72/x
3. Step 3: Cross multiply
   12,129.16x = 16,735.26 × 7,411.72
4. Step 4: Simplify right side
   12,129.16x = 124,037,061.25
5. Step 5: Solve for x
   x = 124,037,061.25/12,129.16
6. Step 6: Final answer
   x = 10,226.35