Finding the Fourth Proportional to 9,885.38, 14,828.84 and 2,865.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,885.38 : 14,828.84 = 2,865.50 : x
2. Step 2: Convert to fraction form
   9,885.38/14,828.84 = 2,865.50/x
3. Step 3: Cross multiply
   9,885.38x = 14,828.84 × 2,865.50
4. Step 4: Simplify right side
   9,885.38x = 42,492,041.02
5. Step 5: Solve for x
   x = 42,492,041.02/9,885.38
6. Step 6: Final answer
   x = 4,298.47