Finding the Fourth Proportional to 10,990.32, 15,167.88 and 7,632.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,990.32 : 15,167.88 = 7,632.24 : x
2. Step 2: Convert to fraction form
   10,990.32/15,167.88 = 7,632.24/x
3. Step 3: Cross multiply
   10,990.32x = 15,167.88 × 7,632.24
4. Step 4: Simplify right side
   10,990.32x = 115,764,900.45
5. Step 5: Solve for x
   x = 115,764,900.45/10,990.32
6. Step 6: Final answer
   x = 10,533.35