Finding the Fourth Proportional to 12,454.58, 17,186.82 and 6,789.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,454.58 : 17,186.82 = 6,789.20 : x
2. Step 2: Convert to fraction form
   12,454.58/17,186.82 = 6,789.20/x
3. Step 3: Cross multiply
   12,454.58x = 17,186.82 × 6,789.20
4. Step 4: Simplify right side
   12,454.58x = 116,684,758.34
5. Step 5: Solve for x
   x = 116,684,758.34/12,454.58
6. Step 6: Final answer
   x = 9,368.82