Finding the Fourth Proportional to 10,429.32, 15,645.69 and 3,407.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,429.32 : 15,645.69 = 3,407.30 : x
2. Step 2: Convert to fraction form
   10,429.32/15,645.69 = 3,407.30/x
3. Step 3: Cross multiply
   10,429.32x = 15,645.69 × 3,407.30
4. Step 4: Simplify right side
   10,429.32x = 53,309,464.27
5. Step 5: Solve for x
   x = 53,309,464.27/10,429.32
6. Step 6: Final answer
   x = 5,111.50