Finding the Fourth Proportional to 9,877.67, 14,814.30 and 2,856.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,877.67 : 14,814.30 = 2,856.15 : x
2. Step 2: Convert to fraction form
   9,877.67/14,814.30 = 2,856.15/x
3. Step 3: Cross multiply
   9,877.67x = 14,814.30 × 2,856.15
4. Step 4: Simplify right side
   9,877.67x = 42,311,862.95
5. Step 5: Solve for x
   x = 42,311,862.95/9,877.67
6. Step 6: Final answer
   x = 4,283.59