Finding the Fourth Proportional to 12,505.53, 17,253.89 and 7,200.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,505.53 : 17,253.89 = 7,200.21 : x
2. Step 2: Convert to fraction form
   12,505.53/17,253.89 = 7,200.21/x
3. Step 3: Cross multiply
   12,505.53x = 17,253.89 × 7,200.21
4. Step 4: Simplify right side
   12,505.53x = 124,231,595.32
5. Step 5: Solve for x
   x = 124,231,595.32/12,505.53
6. Step 6: Final answer
   x = 9,934.13