Finding the Fourth Proportional to 12,131.92, 18,184.80 and 5,878.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,131.92 : 18,184.80 = 5,878.72 : x
2. Step 2: Convert to fraction form
   12,131.92/18,184.80 = 5,878.72/x
3. Step 3: Cross multiply
   12,131.92x = 18,184.80 × 5,878.72
4. Step 4: Simplify right side
   12,131.92x = 106,903,347.46
5. Step 5: Solve for x
   x = 106,903,347.46/12,131.92
6. Step 6: Final answer
   x = 8,811.74