Finding the Fourth Proportional to 9,719.47, 14,579.43 and 3,479.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,719.47 : 14,579.43 = 3,479.91 : x
2. Step 2: Convert to fraction form
   9,719.47/14,579.43 = 3,479.91/x
3. Step 3: Cross multiply
   9,719.47x = 14,579.43 × 3,479.91
4. Step 4: Simplify right side
   9,719.47x = 50,735,104.25
5. Step 5: Solve for x
   x = 50,735,104.25/9,719.47
6. Step 6: Final answer
   x = 5,219.95