Finding the Fourth Proportional to 13,162.28, 18,155.46 and 7,853

Step by Step Solution

1. Step 1: Write the proportion equation
   13,162.28 : 18,155.46 = 7,853 : x
2. Step 2: Convert to fraction form
   13,162.28/18,155.46 = 7,853/x
3. Step 3: Cross multiply
   13,162.28x = 18,155.46 × 7,853
4. Step 4: Simplify right side
   13,162.28x = 142,574,827.38
5. Step 5: Solve for x
   x = 142,574,827.38/13,162.28
6. Step 6: Final answer
   x = 10,832.08