Finding the Fourth Proportional to 13,118.98, 19,678.27 and 3,258.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,118.98 : 19,678.27 = 3,258.35 : x
2. Step 2: Convert to fraction form
   13,118.98/19,678.27 = 3,258.35/x
3. Step 3: Cross multiply
   13,118.98x = 19,678.27 × 3,258.35
4. Step 4: Simplify right side
   13,118.98x = 64,118,691.05
5. Step 5: Solve for x
   x = 64,118,691.05/13,118.98
6. Step 6: Final answer
   x = 4,887.48