Finding the Fourth Proportional to 10,002.39, 15,012.68 and 5,326.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,002.39 : 15,012.68 = 5,326.31 : x
2. Step 2: Convert to fraction form
   10,002.39/15,012.68 = 5,326.31/x
3. Step 3: Cross multiply
   10,002.39x = 15,012.68 × 5,326.31
4. Step 4: Simplify right side
   10,002.39x = 79,962,085.92
5. Step 5: Solve for x
   x = 79,962,085.92/10,002.39
6. Step 6: Final answer
   x = 7,994.30