Finding the Fourth Proportional to 10,616.56, 14,652.72 and 6,139.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,616.56 : 14,652.72 = 6,139.60 : x
2. Step 2: Convert to fraction form
   10,616.56/14,652.72 = 6,139.60/x
3. Step 3: Cross multiply
   10,616.56x = 14,652.72 × 6,139.60
4. Step 4: Simplify right side
   10,616.56x = 89,961,839.71
5. Step 5: Solve for x
   x = 89,961,839.71/10,616.56
6. Step 6: Final answer
   x = 8,473.73