Finding the Fourth Proportional to 9,889.47, 14,803.25 and 5,492.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,889.47 : 14,803.25 = 5,492.79 : x
2. Step 2: Convert to fraction form
   9,889.47/14,803.25 = 5,492.79/x
3. Step 3: Cross multiply
   9,889.47x = 14,803.25 × 5,492.79
4. Step 4: Simplify right side
   9,889.47x = 81,311,116.10
5. Step 5: Solve for x
   x = 81,311,116.10/9,889.47
6. Step 6: Final answer
   x = 8,221.99