Finding the Fourth Proportional to 9,314.50, 12,854.20 and 5,122.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,314.50 : 12,854.20 = 5,122.76 : x
2. Step 2: Convert to fraction form
   9,314.50/12,854.20 = 5,122.76/x
3. Step 3: Cross multiply
   9,314.50x = 12,854.20 × 5,122.76
4. Step 4: Simplify right side
   9,314.50x = 65,848,981.59
5. Step 5: Solve for x
   x = 65,848,981.59/9,314.50
6. Step 6: Final answer
   x = 7,069.51