Finding the Fourth Proportional to 10,419.89, 14,378.90 and 5,703.26

Step by Step Solution

1. Step 1: Write the proportion equation
   10,419.89 : 14,378.90 = 5,703.26 : x
2. Step 2: Convert to fraction form
   10,419.89/14,378.90 = 5,703.26/x
3. Step 3: Cross multiply
   10,419.89x = 14,378.90 × 5,703.26
4. Step 4: Simplify right side
   10,419.89x = 82,006,504.80
5. Step 5: Solve for x
   x = 82,006,504.80/10,419.89
6. Step 6: Final answer
   x = 7,870.19