Finding the Fourth Proportional to 9,861.88, 14,787.18 and 4,667.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,861.88 : 14,787.18 = 4,667.76 : x
2. Step 2: Convert to fraction form
   9,861.88/14,787.18 = 4,667.76/x
3. Step 3: Cross multiply
   9,861.88x = 14,787.18 × 4,667.76
4. Step 4: Simplify right side
   9,861.88x = 69,023,007.32
5. Step 5: Solve for x
   x = 69,023,007.32/9,861.88
6. Step 6: Final answer
   x = 6,998.97