Finding the Fourth Proportional to 10,390.98, 14,339.80 and 5,675.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,390.98 : 14,339.80 = 5,675.30 : x
2. Step 2: Convert to fraction form
   10,390.98/14,339.80 = 5,675.30/x
3. Step 3: Cross multiply
   10,390.98x = 14,339.80 × 5,675.30
4. Step 4: Simplify right side
   10,390.98x = 81,382,666.94
5. Step 5: Solve for x
   x = 81,382,666.94/10,390.98
6. Step 6: Final answer
   x = 7,832.05