Finding the Fourth Proportional to 10,617.90, 14,660.32 and 7,438.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,617.90 : 14,660.32 = 7,438.25 : x
2. Step 2: Convert to fraction form
   10,617.90/14,660.32 = 7,438.25/x
3. Step 3: Cross multiply
   10,617.90x = 14,660.32 × 7,438.25
4. Step 4: Simplify right side
   10,617.90x = 109,047,088.05
5. Step 5: Solve for x
   x = 109,047,088.05/10,617.90
6. Step 6: Final answer
   x = 10,270.12