Finding the Fourth Proportional to 13,255.83, 19,886.18 and 4,371.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,255.83 : 19,886.18 = 4,371.68 : x
2. Step 2: Convert to fraction form
   13,255.83/19,886.18 = 4,371.68/x
3. Step 3: Cross multiply
   13,255.83x = 19,886.18 × 4,371.68
4. Step 4: Simplify right side
   13,255.83x = 86,936,015.38
5. Step 5: Solve for x
   x = 86,936,015.38/13,255.83
6. Step 6: Final answer
   x = 6,558.32