Finding the Fourth Proportional to 10,488.60, 15,735.18 and 3,470.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,488.60 : 15,735.18 = 3,470.76 : x
2. Step 2: Convert to fraction form
   10,488.60/15,735.18 = 3,470.76/x
3. Step 3: Cross multiply
   10,488.60x = 15,735.18 × 3,470.76
4. Step 4: Simplify right side
   10,488.60x = 54,613,033.34
5. Step 5: Solve for x
   x = 54,613,033.34/10,488.60
6. Step 6: Final answer
   x = 5,206.89