Finding the Fourth Proportional to 13,017.78, 19,526.27 and 3,657.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,017.78 : 19,526.27 = 3,657.83 : x
2. Step 2: Convert to fraction form
   13,017.78/19,526.27 = 3,657.83/x
3. Step 3: Cross multiply
   13,017.78x = 19,526.27 × 3,657.83
4. Step 4: Simplify right side
   13,017.78x = 71,423,660.27
5. Step 5: Solve for x
   x = 71,423,660.27/13,017.78
6. Step 6: Final answer
   x = 5,486.62