Finding the Fourth Proportional to 12,462.84, 17,198.88 and 7,158.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,462.84 : 17,198.88 = 7,158.15 : x
2. Step 2: Convert to fraction form
   12,462.84/17,198.88 = 7,158.15/x
3. Step 3: Cross multiply
   12,462.84x = 17,198.88 × 7,158.15
4. Step 4: Simplify right side
   12,462.84x = 123,112,162.87
5. Step 5: Solve for x
   x = 123,112,162.87/12,462.84
6. Step 6: Final answer
   x = 9,878.34