Finding the Fourth Proportional to 10,425.42, 14,386.53 and 5,709.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,425.42 : 14,386.53 = 5,709.60 : x
2. Step 2: Convert to fraction form
   10,425.42/14,386.53 = 5,709.60/x
3. Step 3: Cross multiply
   10,425.42x = 14,386.53 × 5,709.60
4. Step 4: Simplify right side
   10,425.42x = 82,141,331.69
5. Step 5: Solve for x
   x = 82,141,331.69/10,425.42
6. Step 6: Final answer
   x = 7,878.95