Finding the Fourth Proportional to 9,322.50, 12,865.05 and 5,131.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,322.50 : 12,865.05 = 5,131.02 : x
2. Step 2: Convert to fraction form
   9,322.50/12,865.05 = 5,131.02/x
3. Step 3: Cross multiply
   9,322.50x = 12,865.05 × 5,131.02
4. Step 4: Simplify right side
   9,322.50x = 66,010,828.85
5. Step 5: Solve for x
   x = 66,010,828.85/9,322.50
6. Step 6: Final answer
   x = 7,080.81