Finding the Fourth Proportional to 10,429.60, 15,642.76 and 3,409.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,429.60 : 15,642.76 = 3,409.56 : x
2. Step 2: Convert to fraction form
   10,429.60/15,642.76 = 3,409.56/x
3. Step 3: Cross multiply
   10,429.60x = 15,642.76 × 3,409.56
4. Step 4: Simplify right side
   10,429.60x = 53,334,928.79
5. Step 5: Solve for x
   x = 53,334,928.79/10,429.60
6. Step 6: Final answer
   x = 5,113.80