Finding the Fourth Proportional to 10,499.39, 15,751.31 and 3,479.01

Step by Step Solution

1. Step 1: Write the proportion equation
   10,499.39 : 15,751.31 = 3,479.01 : x
2. Step 2: Convert to fraction form
   10,499.39/15,751.31 = 3,479.01/x
3. Step 3: Cross multiply
   10,499.39x = 15,751.31 × 3,479.01
4. Step 4: Simplify right side
   10,499.39x = 54,798,965.00
5. Step 5: Solve for x
   x = 54,798,965.00/10,499.39
6. Step 6: Final answer
   x = 5,219.25