Finding the Fourth Proportional to 11,436.04, 15,781.62 and 7,247.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,436.04 : 15,781.62 = 7,247.72 : x
2. Step 2: Convert to fraction form
   11,436.04/15,781.62 = 7,247.72/x
3. Step 3: Cross multiply
   11,436.04x = 15,781.62 × 7,247.72
4. Step 4: Simplify right side
   11,436.04x = 114,380,762.91
5. Step 5: Solve for x
   x = 114,380,762.91/11,436.04
6. Step 6: Final answer
   x = 10,001.78