Finding the Fourth Proportional to 12,677.90, 17,495.96 and 7,374.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,677.90 : 17,495.96 = 7,374.42 : x
2. Step 2: Convert to fraction form
   12,677.90/17,495.96 = 7,374.42/x
3. Step 3: Cross multiply
   12,677.90x = 17,495.96 × 7,374.42
4. Step 4: Simplify right side
   12,677.90x = 129,022,520.47
5. Step 5: Solve for x
   x = 129,022,520.47/12,677.90
6. Step 6: Final answer
   x = 10,176.97