Finding the Fourth Proportional to 13,084.52, 18,056.70 and 7,116.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,084.52 : 18,056.70 = 7,116.16 : x
2. Step 2: Convert to fraction form
   13,084.52/18,056.70 = 7,116.16/x
3. Step 3: Cross multiply
   13,084.52x = 18,056.70 × 7,116.16
4. Step 4: Simplify right side
   13,084.52x = 128,494,366.27
5. Step 5: Solve for x
   x = 128,494,366.27/13,084.52
6. Step 6: Final answer
   x = 9,820.33