Finding the Fourth Proportional to 10,389.62, 14,337.78 and 5,673.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,389.62 : 14,337.78 = 5,673.98 : x
2. Step 2: Convert to fraction form
   10,389.62/14,337.78 = 5,673.98/x
3. Step 3: Cross multiply
   10,389.62x = 14,337.78 × 5,673.98
4. Step 4: Simplify right side
   10,389.62x = 81,352,276.96
5. Step 5: Solve for x
   x = 81,352,276.96/10,389.62
6. Step 6: Final answer
   x = 7,830.15