Finding the Fourth Proportional to 10,401.99, 14,354.21 and 5,685.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,401.99 : 14,354.21 = 5,685.36 : x
2. Step 2: Convert to fraction form
   10,401.99/14,354.21 = 5,685.36/x
3. Step 3: Cross multiply
   10,401.99x = 14,354.21 × 5,685.36
4. Step 4: Simplify right side
   10,401.99x = 81,608,822.94
5. Step 5: Solve for x
   x = 81,608,822.94/10,401.99
6. Step 6: Final answer
   x = 7,845.50