Finding the Fourth Proportional to 9,986.86, 14,875.61 and 9,481.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.86 : 14,875.61 = 9,481.42 : x
2. Step 2: Convert to fraction form
   9,986.86/14,875.61 = 9,481.42/x
3. Step 3: Cross multiply
   9,986.86x = 14,875.61 × 9,481.42
4. Step 4: Simplify right side
   9,986.86x = 141,041,906.17
5. Step 5: Solve for x
   x = 141,041,906.17/9,986.86
6. Step 6: Final answer
   x = 14,122.75