Finding the Fourth Proportional to 8,108.95, 12,164.43 and 2,561.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,108.95 : 12,164.43 = 2,561.47 : x
2. Step 2: Convert to fraction form
   8,108.95/12,164.43 = 2,561.47/x
3. Step 3: Cross multiply
   8,108.95x = 12,164.43 × 2,561.47
4. Step 4: Simplify right side
   8,108.95x = 31,158,822.51
5. Step 5: Solve for x
   x = 31,158,822.51/8,108.95
6. Step 6: Final answer
   x = 3,842.52