Finding the Fourth Proportional to 12,878.59, 19,315.61 and 5,856.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,878.59 : 19,315.61 = 5,856.96 : x
2. Step 2: Convert to fraction form
   12,878.59/19,315.61 = 5,856.96/x
3. Step 3: Cross multiply
   12,878.59x = 19,315.61 × 5,856.96
4. Step 4: Simplify right side
   12,878.59x = 113,130,755.15
5. Step 5: Solve for x
   x = 113,130,755.15/12,878.59
6. Step 6: Final answer
   x = 8,784.41