Finding the Fourth Proportional to 12,677.55, 17,501.15 and 8,435.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,677.55 : 17,501.15 = 8,435.69 : x
2. Step 2: Convert to fraction form
   12,677.55/17,501.15 = 8,435.69/x
3. Step 3: Cross multiply
   12,677.55x = 17,501.15 × 8,435.69
4. Step 4: Simplify right side
   12,677.55x = 147,634,146.36
5. Step 5: Solve for x
   x = 147,634,146.36/12,677.55
6. Step 6: Final answer
   x = 11,645.32