Finding the Fourth Proportional to 11,123.24, 15,347.40 and 7,088.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,123.24 : 15,347.40 = 7,088.72 : x
2. Step 2: Convert to fraction form
   11,123.24/15,347.40 = 7,088.72/x
3. Step 3: Cross multiply
   11,123.24x = 15,347.40 × 7,088.72
4. Step 4: Simplify right side
   11,123.24x = 108,793,421.33
5. Step 5: Solve for x
   x = 108,793,421.33/11,123.24
6. Step 6: Final answer
   x = 9,780.73