Finding the Fourth Proportional to 13,099.50, 18,077.13 and 7,794.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,099.50 : 18,077.13 = 7,794.18 : x
2. Step 2: Convert to fraction form
   13,099.50/18,077.13 = 7,794.18/x
3. Step 3: Cross multiply
   13,099.50x = 18,077.13 × 7,794.18
4. Step 4: Simplify right side
   13,099.50x = 140,896,405.10
5. Step 5: Solve for x
   x = 140,896,405.10/13,099.50
6. Step 6: Final answer
   x = 10,755.86