Finding the Fourth Proportional to 10,632.56, 14,647.55 and 7,439.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,632.56 : 14,647.55 = 7,439.90 : x
2. Step 2: Convert to fraction form
   10,632.56/14,647.55 = 7,439.90/x
3. Step 3: Cross multiply
   10,632.56x = 14,647.55 × 7,439.90
4. Step 4: Simplify right side
   10,632.56x = 108,976,196.81
5. Step 5: Solve for x
   x = 108,976,196.81/10,632.56
6. Step 6: Final answer
   x = 10,249.30