Finding the Fourth Proportional to 10,430.53, 15,643.05 and 3,858.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,430.53 : 15,643.05 = 3,858.59 : x
2. Step 2: Convert to fraction form
   10,430.53/15,643.05 = 3,858.59/x
3. Step 3: Cross multiply
   10,430.53x = 15,643.05 × 3,858.59
4. Step 4: Simplify right side
   10,430.53x = 60,360,116.30
5. Step 5: Solve for x
   x = 60,360,116.30/10,430.53
6. Step 6: Final answer
   x = 5,786.87