Finding the Fourth Proportional to 12,862.79, 17,751.30 and 7,559.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,862.79 : 17,751.30 = 7,559.31 : x
2. Step 2: Convert to fraction form
   12,862.79/17,751.30 = 7,559.31/x
3. Step 3: Cross multiply
   12,862.79x = 17,751.30 × 7,559.31
4. Step 4: Simplify right side
   12,862.79x = 134,187,579.60
5. Step 5: Solve for x
   x = 134,187,579.60/12,862.79
6. Step 6: Final answer
   x = 10,432.23