Finding the Fourth Proportional to 13,084.56, 18,056.16 and 7,116.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,084.56 : 18,056.16 = 7,116.12 : x
2. Step 2: Convert to fraction form
   13,084.56/18,056.16 = 7,116.12/x
3. Step 3: Cross multiply
   13,084.56x = 18,056.16 × 7,116.12
4. Step 4: Simplify right side
   13,084.56x = 128,489,801.30
5. Step 5: Solve for x
   x = 128,489,801.30/13,084.56
6. Step 6: Final answer
   x = 9,819.96