Finding the Fourth Proportional to 13,266.54, 19,782.77 and 13,148.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,266.54 : 19,782.77 = 13,148.10 : x
2. Step 2: Convert to fraction form
   13,266.54/19,782.77 = 13,148.10/x
3. Step 3: Cross multiply
   13,266.54x = 19,782.77 × 13,148.10
4. Step 4: Simplify right side
   13,266.54x = 260,105,772.50
5. Step 5: Solve for x
   x = 260,105,772.50/13,266.54
6. Step 6: Final answer
   x = 19,606.15