Finding the Fourth Proportional to 9,729.11, 14,599.59 and 7,499.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,729.11 : 14,599.59 = 7,499.28 : x
2. Step 2: Convert to fraction form
   9,729.11/14,599.59 = 7,499.28/x
3. Step 3: Cross multiply
   9,729.11x = 14,599.59 × 7,499.28
4. Step 4: Simplify right side
   9,729.11x = 109,486,482.10
5. Step 5: Solve for x
   x = 109,486,482.10/9,729.11
6. Step 6: Final answer
   x = 11,253.49