Finding the Fourth Proportional to 11,071.30, 15,269.74 and 7,092.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,071.30 : 15,269.74 = 7,092.78 : x
2. Step 2: Convert to fraction form
   11,071.30/15,269.74 = 7,092.78/x
3. Step 3: Cross multiply
   11,071.30x = 15,269.74 × 7,092.78
4. Step 4: Simplify right side
   11,071.30x = 108,304,906.48
5. Step 5: Solve for x
   x = 108,304,906.48/11,071.30
6. Step 6: Final answer
   x = 9,782.49