Finding the Fourth Proportional to 9,981.84, 14,943.78 and 5,809.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.84 : 14,943.78 = 5,809.12 : x
2. Step 2: Convert to fraction form
   9,981.84/14,943.78 = 5,809.12/x
3. Step 3: Cross multiply
   9,981.84x = 14,943.78 × 5,809.12
4. Step 4: Simplify right side
   9,981.84x = 86,810,211.27
5. Step 5: Solve for x
   x = 86,810,211.27/9,981.84
6. Step 6: Final answer
   x = 8,696.81