Finding the Fourth Proportional to 12,445.88, 17,174.69 and 6,780.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,445.88 : 17,174.69 = 6,780.59 : x
2. Step 2: Convert to fraction form
   12,445.88/17,174.69 = 6,780.59/x
3. Step 3: Cross multiply
   12,445.88x = 17,174.69 × 6,780.59
4. Step 4: Simplify right side
   12,445.88x = 116,454,591.16
5. Step 5: Solve for x
   x = 116,454,591.16/12,445.88
6. Step 6: Final answer
   x = 9,356.88