Finding the Fourth Proportional to 10,359.55, 15,538.92 and 4,119.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,359.55 : 15,538.92 = 4,119.31 : x
2. Step 2: Convert to fraction form
   10,359.55/15,538.92 = 4,119.31/x
3. Step 3: Cross multiply
   10,359.55x = 15,538.92 × 4,119.31
4. Step 4: Simplify right side
   10,359.55x = 64,009,628.55
5. Step 5: Solve for x
   x = 64,009,628.55/10,359.55
6. Step 6: Final answer
   x = 6,178.80