Finding the Fourth Proportional to 8,805.78, 12,155.94 and 5,663.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,805.78 : 12,155.94 = 5,663.52 : x
2. Step 2: Convert to fraction form
   8,805.78/12,155.94 = 5,663.52/x
3. Step 3: Cross multiply
   8,805.78x = 12,155.94 × 5,663.52
4. Step 4: Simplify right side
   8,805.78x = 68,845,409.31
5. Step 5: Solve for x
   x = 68,845,409.31/8,805.78
6. Step 6: Final answer
   x = 7,818.21