Finding the Fourth Proportional to 13,084.50, 18,056.59 and 7,116.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,084.50 : 18,056.59 = 7,116.18 : x
2. Step 2: Convert to fraction form
   13,084.50/18,056.59 = 7,116.18/x
3. Step 3: Cross multiply
   13,084.50x = 18,056.59 × 7,116.18
4. Step 4: Simplify right side
   13,084.50x = 128,493,944.63
5. Step 5: Solve for x
   x = 128,493,944.63/13,084.50
6. Step 6: Final answer
   x = 9,820.32