Finding the Fourth Proportional to 13,084.31, 18,056.47 and 7,116.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,084.31 : 18,056.47 = 7,116.10 : x
2. Step 2: Convert to fraction form
   13,084.31/18,056.47 = 7,116.10/x
3. Step 3: Cross multiply
   13,084.31x = 18,056.47 × 7,116.10
4. Step 4: Simplify right side
   13,084.31x = 128,491,646.17
5. Step 5: Solve for x
   x = 128,491,646.17/13,084.31
6. Step 6: Final answer
   x = 9,820.28