Finding the Fourth Proportional to 9,307.05, 12,843.78 and 5,058.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,307.05 : 12,843.78 = 5,058.15 : x
2. Step 2: Convert to fraction form
   9,307.05/12,843.78 = 5,058.15/x
3. Step 3: Cross multiply
   9,307.05x = 12,843.78 × 5,058.15
4. Step 4: Simplify right side
   9,307.05x = 64,965,765.81
5. Step 5: Solve for x
   x = 64,965,765.81/9,307.05
6. Step 6: Final answer
   x = 6,980.27