Finding the Fourth Proportional to 9,333.36, 12,878.60 and 5,979.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,333.36 : 12,878.60 = 5,979.15 : x
2. Step 2: Convert to fraction form
   9,333.36/12,878.60 = 5,979.15/x
3. Step 3: Cross multiply
   9,333.36x = 12,878.60 × 5,979.15
4. Step 4: Simplify right side
   9,333.36x = 77,003,051.29
5. Step 5: Solve for x
   x = 77,003,051.29/9,333.36
6. Step 6: Final answer
   x = 8,250.30