Finding the Fourth Proportional to 9,386.98, 12,958.68 and 5,851.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,386.98 : 12,958.68 = 5,851.30 : x
2. Step 2: Convert to fraction form
   9,386.98/12,958.68 = 5,851.30/x
3. Step 3: Cross multiply
   9,386.98x = 12,958.68 × 5,851.30
4. Step 4: Simplify right side
   9,386.98x = 75,825,124.28
5. Step 5: Solve for x
   x = 75,825,124.28/9,386.98
6. Step 6: Final answer
   x = 8,077.69