Finding the Fourth Proportional to 8,699.16, 12,004.02 and 4,921.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,699.16 : 12,004.02 = 4,921.86 : x
2. Step 2: Convert to fraction form
   8,699.16/12,004.02 = 4,921.86/x
3. Step 3: Cross multiply
   8,699.16x = 12,004.02 × 4,921.86
4. Step 4: Simplify right side
   8,699.16x = 59,082,105.88
5. Step 5: Solve for x
   x = 59,082,105.88/8,699.16
6. Step 6: Final answer
   x = 6,791.70