Finding the Fourth Proportional to 10,522.59, 15,772.91 and 4,280.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,522.59 : 15,772.91 = 4,280.10 : x
2. Step 2: Convert to fraction form
   10,522.59/15,772.91 = 4,280.10/x
3. Step 3: Cross multiply
   10,522.59x = 15,772.91 × 4,280.10
4. Step 4: Simplify right side
   10,522.59x = 67,509,610.69
5. Step 5: Solve for x
   x = 67,509,610.69/10,522.59
6. Step 6: Final answer
   x = 6,415.68