Finding the Fourth Proportional to 39,890.77, 55,039.59 and 22,659.30

Step by Step Solution

1. Step 1: Write the proportion equation
   39,890.77 : 55,039.59 = 22,659.30 : x
2. Step 2: Convert to fraction form
   39,890.77/55,039.59 = 22,659.30/x
3. Step 3: Cross multiply
   39,890.77x = 55,039.59 × 22,659.30
4. Step 4: Simplify right side
   39,890.77x = 1,247,158,581.69
5. Step 5: Solve for x
   x = 1,247,158,581.69/39,890.77
6. Step 6: Final answer
   x = 31,264.34