Finding the Fourth Proportional to 12,877.86, 19,315.29 and 3,517.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,877.86 : 19,315.29 = 3,517.50 : x
2. Step 2: Convert to fraction form
   12,877.86/19,315.29 = 3,517.50/x
3. Step 3: Cross multiply
   12,877.86x = 19,315.29 × 3,517.50
4. Step 4: Simplify right side
   12,877.86x = 67,941,532.58
5. Step 5: Solve for x
   x = 67,941,532.58/12,877.86
6. Step 6: Final answer
   x = 5,275.84