Finding the Fourth Proportional to 12,884.95, 17,789.76 and 9,895.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,884.95 : 17,789.76 = 9,895.42 : x
2. Step 2: Convert to fraction form
   12,884.95/17,789.76 = 9,895.42/x
3. Step 3: Cross multiply
   12,884.95x = 17,789.76 × 9,895.42
4. Step 4: Simplify right side
   12,884.95x = 176,037,146.90
5. Step 5: Solve for x
   x = 176,037,146.90/12,884.95
6. Step 6: Final answer
   x = 13,662.23