Finding the Fourth Proportional to 11,902.54, 16,422.72 and 7,124.02

Step by Step Solution

1. Step 1: Write the proportion equation
   11,902.54 : 16,422.72 = 7,124.02 : x
2. Step 2: Convert to fraction form
   11,902.54/16,422.72 = 7,124.02/x
3. Step 3: Cross multiply
   11,902.54x = 16,422.72 × 7,124.02
4. Step 4: Simplify right side
   11,902.54x = 116,995,785.73
5. Step 5: Solve for x
   x = 116,995,785.73/11,902.54
6. Step 6: Final answer
   x = 9,829.48