Finding the Fourth Proportional to 10,425.59, 15,641.31 and 4,189.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,425.59 : 15,641.31 = 4,189.98 : x
2. Step 2: Convert to fraction form
   10,425.59/15,641.31 = 4,189.98/x
3. Step 3: Cross multiply
   10,425.59x = 15,641.31 × 4,189.98
4. Step 4: Simplify right side
   10,425.59x = 65,536,776.07
5. Step 5: Solve for x
   x = 65,536,776.07/10,425.59
6. Step 6: Final answer
   x = 6,286.15