Finding the Fourth Proportional to 13,155.58, 18,155.06 and 7,853.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,155.58 : 18,155.06 = 7,853.48 : x
2. Step 2: Convert to fraction form
   13,155.58/18,155.06 = 7,853.48/x
3. Step 3: Cross multiply
   13,155.58x = 18,155.06 × 7,853.48
4. Step 4: Simplify right side
   13,155.58x = 142,580,270.57
5. Step 5: Solve for x
   x = 142,580,270.57/13,155.58
6. Step 6: Final answer
   x = 10,838.01