Finding the Fourth Proportional to 8,630.78, 11,905.98 and 5,442.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,630.78 : 11,905.98 = 5,442.36 : x
2. Step 2: Convert to fraction form
   8,630.78/11,905.98 = 5,442.36/x
3. Step 3: Cross multiply
   8,630.78x = 11,905.98 × 5,442.36
4. Step 4: Simplify right side
   8,630.78x = 64,796,629.31
5. Step 5: Solve for x
   x = 64,796,629.31/8,630.78
6. Step 6: Final answer
   x = 7,507.62