Finding the Fourth Proportional to 9,101.55, 12,559.61 and 5,122.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,101.55 : 12,559.61 = 5,122.50 : x
2. Step 2: Convert to fraction form
   9,101.55/12,559.61 = 5,122.50/x
3. Step 3: Cross multiply
   9,101.55x = 12,559.61 × 5,122.50
4. Step 4: Simplify right side
   9,101.55x = 64,336,576.61
5. Step 5: Solve for x
   x = 64,336,576.61/9,101.55
6. Step 6: Final answer
   x = 7,068.75