Finding the Fourth Proportional to 8,460.72, 12,669.20 and 5,836.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,460.72 : 12,669.20 = 5,836.32 : x
2. Step 2: Convert to fraction form
   8,460.72/12,669.20 = 5,836.32/x
3. Step 3: Cross multiply
   8,460.72x = 12,669.20 × 5,836.32
4. Step 4: Simplify right side
   8,460.72x = 73,941,442.00
5. Step 5: Solve for x
   x = 73,941,442.00/8,460.72
6. Step 6: Final answer
   x = 8,739.38