Finding the Fourth Proportional to 9,887.56, 13,633.62 and 7,399.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,887.56 : 13,633.62 = 7,399.24 : x
2. Step 2: Convert to fraction form
   9,887.56/13,633.62 = 7,399.24/x
3. Step 3: Cross multiply
   9,887.56x = 13,633.62 × 7,399.24
4. Step 4: Simplify right side
   9,887.56x = 100,878,426.45
5. Step 5: Solve for x
   x = 100,878,426.45/9,887.56
6. Step 6: Final answer
   x = 10,202.56