Finding the Fourth Proportional to 8,697.78, 12,004.47 and 5,162.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,697.78 : 12,004.47 = 5,162.94 : x
2. Step 2: Convert to fraction form
   8,697.78/12,004.47 = 5,162.94/x
3. Step 3: Cross multiply
   8,697.78x = 12,004.47 × 5,162.94
4. Step 4: Simplify right side
   8,697.78x = 61,978,358.34
5. Step 5: Solve for x
   x = 61,978,358.34/8,697.78
6. Step 6: Final answer
   x = 7,125.77