Finding the Fourth Proportional to 12,459.15, 17,193.69 and 6,870.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,459.15 : 17,193.69 = 6,870.15 : x
2. Step 2: Convert to fraction form
   12,459.15/17,193.69 = 6,870.15/x
3. Step 3: Cross multiply
   12,459.15x = 17,193.69 × 6,870.15
4. Step 4: Simplify right side
   12,459.15x = 118,123,229.35
5. Step 5: Solve for x
   x = 118,123,229.35/12,459.15
6. Step 6: Final answer
   x = 9,480.84