Finding the Fourth Proportional to 10,396.72, 14,347.83 and 5,681.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,396.72 : 14,347.83 = 5,681.31 : x
2. Step 2: Convert to fraction form
   10,396.72/14,347.83 = 5,681.31/x
3. Step 3: Cross multiply
   10,396.72x = 14,347.83 × 5,681.31
4. Step 4: Simplify right side
   10,396.72x = 81,514,384.11
5. Step 5: Solve for x
   x = 81,514,384.11/10,396.72
6. Step 6: Final answer
   x = 7,840.39