Finding the Fourth Proportional to 10,182.16, 15,242.52 and 9,208.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,182.16 : 15,242.52 = 9,208.72 : x
2. Step 2: Convert to fraction form
   10,182.16/15,242.52 = 9,208.72/x
3. Step 3: Cross multiply
   10,182.16x = 15,242.52 × 9,208.72
4. Step 4: Simplify right side
   10,182.16x = 140,364,098.77
5. Step 5: Solve for x
   x = 140,364,098.77/10,182.16
6. Step 6: Final answer
   x = 13,785.30