Finding the Fourth Proportional to 11,003.80, 15,185.20 and 6,529.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,003.80 : 15,185.20 = 6,529.72 : x
2. Step 2: Convert to fraction form
   11,003.80/15,185.20 = 6,529.72/x
3. Step 3: Cross multiply
   11,003.80x = 15,185.20 × 6,529.72
4. Step 4: Simplify right side
   11,003.80x = 99,155,104.14
5. Step 5: Solve for x
   x = 99,155,104.14/11,003.80
6. Step 6: Final answer
   x = 9,010.99