Finding the Fourth Proportional to 12,152.16, 16,761.60 and 9,326.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,152.16 : 16,761.60 = 9,326.88 : x
2. Step 2: Convert to fraction form
   12,152.16/16,761.60 = 9,326.88/x
3. Step 3: Cross multiply
   12,152.16x = 16,761.60 × 9,326.88
4. Step 4: Simplify right side
   12,152.16x = 156,333,431.81
5. Step 5: Solve for x
   x = 156,333,431.81/12,152.16
6. Step 6: Final answer
   x = 12,864.66