Finding the Fourth Proportional to 9,391.72, 12,958.54 and 5,990.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,391.72 : 12,958.54 = 5,990.02 : x
2. Step 2: Convert to fraction form
   9,391.72/12,958.54 = 5,990.02/x
3. Step 3: Cross multiply
   9,391.72x = 12,958.54 × 5,990.02
4. Step 4: Simplify right side
   9,391.72x = 77,621,913.77
5. Step 5: Solve for x
   x = 77,621,913.77/9,391.72
6. Step 6: Final answer
   x = 8,264.93