Finding the Fourth Proportional to 9,321.98, 12,864.39 and 5,073.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,321.98 : 12,864.39 = 5,073.07 : x
2. Step 2: Convert to fraction form
   9,321.98/12,864.39 = 5,073.07/x
3. Step 3: Cross multiply
   9,321.98x = 12,864.39 × 5,073.07
4. Step 4: Simplify right side
   9,321.98x = 65,261,994.58
5. Step 5: Solve for x
   x = 65,261,994.58/9,321.98
6. Step 6: Final answer
   x = 7,000.87