Finding the Fourth Proportional to 13,127.94, 18,116.78 and 7,159.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,127.94 : 18,116.78 = 7,159.82 : x
2. Step 2: Convert to fraction form
   13,127.94/18,116.78 = 7,159.82/x
3. Step 3: Cross multiply
   13,127.94x = 18,116.78 × 7,159.82
4. Step 4: Simplify right side
   13,127.94x = 129,712,883.78
5. Step 5: Solve for x
   x = 129,712,883.78/13,127.94
6. Step 6: Final answer
   x = 9,880.68