Finding the Fourth Proportional to 10,400.58, 14,353.20 and 5,685.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,400.58 : 14,353.20 = 5,685.30 : x
2. Step 2: Convert to fraction form
   10,400.58/14,353.20 = 5,685.30/x
3. Step 3: Cross multiply
   10,400.58x = 14,353.20 × 5,685.30
4. Step 4: Simplify right side
   10,400.58x = 81,602,247.96
5. Step 5: Solve for x
   x = 81,602,247.96/10,400.58
6. Step 6: Final answer
   x = 7,845.93