Finding the Fourth Proportional to 13,180.52, 18,189.38 and 7,875.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,180.52 : 18,189.38 = 7,875.34 : x
2. Step 2: Convert to fraction form
   13,180.52/18,189.38 = 7,875.34/x
3. Step 3: Cross multiply
   13,180.52x = 18,189.38 × 7,875.34
4. Step 4: Simplify right side
   13,180.52x = 143,247,551.89
5. Step 5: Solve for x
   x = 143,247,551.89/13,180.52
6. Step 6: Final answer
   x = 10,868.13