Finding the Fourth Proportional to 12,128.16, 16,733.88 and 7,410.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,128.16 : 16,733.88 = 7,410.72 : x
2. Step 2: Convert to fraction form
   12,128.16/16,733.88 = 7,410.72/x
3. Step 3: Cross multiply
   12,128.16x = 16,733.88 × 7,410.72
4. Step 4: Simplify right side
   12,128.16x = 124,010,099.19
5. Step 5: Solve for x
   x = 124,010,099.19/12,128.16
6. Step 6: Final answer
   x = 10,224.97