Finding the Fourth Proportional to 10,078.18, 13,881.78 and 8,482.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,078.18 : 13,881.78 = 8,482.86 : x
2. Step 2: Convert to fraction form
   10,078.18/13,881.78 = 8,482.86/x
3. Step 3: Cross multiply
   10,078.18x = 13,881.78 × 8,482.86
4. Step 4: Simplify right side
   10,078.18x = 117,757,196.29
5. Step 5: Solve for x
   x = 117,757,196.29/10,078.18
6. Step 6: Final answer
   x = 11,684.37