Finding the Fourth Proportional to 10,499.70, 15,751.22 and 3,479.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,499.70 : 15,751.22 = 3,479.96 : x
2. Step 2: Convert to fraction form
   10,499.70/15,751.22 = 3,479.96/x
3. Step 3: Cross multiply
   10,499.70x = 15,751.22 × 3,479.96
4. Step 4: Simplify right side
   10,499.70x = 54,813,663.63
5. Step 5: Solve for x
   x = 54,813,663.63/10,499.70
6. Step 6: Final answer
   x = 5,220.50