Finding the Fourth Proportional to 13,258.89, 19,885.27 and 5,859.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,258.89 : 19,885.27 = 5,859.32 : x
2. Step 2: Convert to fraction form
   13,258.89/19,885.27 = 5,859.32/x
3. Step 3: Cross multiply
   13,258.89x = 19,885.27 × 5,859.32
4. Step 4: Simplify right side
   13,258.89x = 116,514,160.22
5. Step 5: Solve for x
   x = 116,514,160.22/13,258.89
6. Step 6: Final answer
   x = 8,787.63