Finding the Fourth Proportional to 13,120.18, 18,094.69 and 8,870.11

Step by Step Solution

1. Step 1: Write the proportion equation
   13,120.18 : 18,094.69 = 8,870.11 : x
2. Step 2: Convert to fraction form
   13,120.18/18,094.69 = 8,870.11/x
3. Step 3: Cross multiply
   13,120.18x = 18,094.69 × 8,870.11
4. Step 4: Simplify right side
   13,120.18x = 160,501,856.57
5. Step 5: Solve for x
   x = 160,501,856.57/13,120.18
6. Step 6: Final answer
   x = 12,233.21