Finding the Fourth Proportional to 13,255.77, 19,890.63 and 5,865.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,255.77 : 19,890.63 = 5,865.33 : x
2. Step 2: Convert to fraction form
   13,255.77/19,890.63 = 5,865.33/x
3. Step 3: Cross multiply
   13,255.77x = 19,890.63 × 5,865.33
4. Step 4: Simplify right side
   13,255.77x = 116,665,108.86
5. Step 5: Solve for x
   x = 116,665,108.86/13,255.77
6. Step 6: Final answer
   x = 8,801.08