Finding the Fourth Proportional to 9,109.77, 12,571.05 and 5,076.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,109.77 : 12,571.05 = 5,076.81 : x
2. Step 2: Convert to fraction form
   9,109.77/12,571.05 = 5,076.81/x
3. Step 3: Cross multiply
   9,109.77x = 12,571.05 × 5,076.81
4. Step 4: Simplify right side
   9,109.77x = 63,820,822.83
5. Step 5: Solve for x
   x = 63,820,822.83/9,109.77
6. Step 6: Final answer
   x = 7,005.76