Finding the Fourth Proportional to 12,561.96, 17,338.60 and 7,259.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,561.96 : 17,338.60 = 7,259.88 : x
2. Step 2: Convert to fraction form
   12,561.96/17,338.60 = 7,259.88/x
3. Step 3: Cross multiply
   12,561.96x = 17,338.60 × 7,259.88
4. Step 4: Simplify right side
   12,561.96x = 125,876,155.37
5. Step 5: Solve for x
   x = 125,876,155.37/12,561.96
6. Step 6: Final answer
   x = 10,020.42