Finding the Fourth Proportional to 9,981.57, 14,884.31 and 9,491.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.57 : 14,884.31 = 9,491.05 : x
2. Step 2: Convert to fraction form
   9,981.57/14,884.31 = 9,491.05/x
3. Step 3: Cross multiply
   9,981.57x = 14,884.31 × 9,491.05
4. Step 4: Simplify right side
   9,981.57x = 141,267,645.76
5. Step 5: Solve for x
   x = 141,267,645.76/9,981.57
6. Step 6: Final answer
   x = 14,152.85