Finding the Fourth Proportional to 13,371.60, 18,454.82 and 7,707.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,371.60 : 18,454.82 = 7,707.18 : x
2. Step 2: Convert to fraction form
   13,371.60/18,454.82 = 7,707.18/x
3. Step 3: Cross multiply
   13,371.60x = 18,454.82 × 7,707.18
4. Step 4: Simplify right side
   13,371.60x = 142,234,619.61
5. Step 5: Solve for x
   x = 142,234,619.61/13,371.60
6. Step 6: Final answer
   x = 10,637.07