Finding the Fourth Proportional to 12,515.68, 17,269.93 and 7,478.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,515.68 : 17,269.93 = 7,478.83 : x
2. Step 2: Convert to fraction form
   12,515.68/17,269.93 = 7,478.83/x
3. Step 3: Cross multiply
   12,515.68x = 17,269.93 × 7,478.83
4. Step 4: Simplify right side
   12,515.68x = 129,158,870.58
5. Step 5: Solve for x
   x = 129,158,870.58/12,515.68
6. Step 6: Final answer
   x = 10,319.76