Finding the Fourth Proportional to 9,906.12, 14,856.96 and 2,886.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,906.12 : 14,856.96 = 2,886.12 : x
2. Step 2: Convert to fraction form
   9,906.12/14,856.96 = 2,886.12/x
3. Step 3: Cross multiply
   9,906.12x = 14,856.96 × 2,886.12
4. Step 4: Simplify right side
   9,906.12x = 42,878,969.40
5. Step 5: Solve for x
   x = 42,878,969.40/9,906.12
6. Step 6: Final answer
   x = 4,328.53