Finding the Fourth Proportional to 9,887.56, 14,829.01 and 2,865.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,887.56 : 14,829.01 = 2,865.72 : x
2. Step 2: Convert to fraction form
   9,887.56/14,829.01 = 2,865.72/x
3. Step 3: Cross multiply
   9,887.56x = 14,829.01 × 2,865.72
4. Step 4: Simplify right side
   9,887.56x = 42,495,790.54
5. Step 5: Solve for x
   x = 42,495,790.54/9,887.56
6. Step 6: Final answer
   x = 4,297.90