Finding the Fourth Proportional to 12,910.26, 19,365.50 and 5,510.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,910.26 : 19,365.50 = 5,510.91 : x
2. Step 2: Convert to fraction form
   12,910.26/19,365.50 = 5,510.91/x
3. Step 3: Cross multiply
   12,910.26x = 19,365.50 × 5,510.91
4. Step 4: Simplify right side
   12,910.26x = 106,721,500.05
5. Step 5: Solve for x
   x = 106,721,500.05/12,910.26
6. Step 6: Final answer
   x = 8,266.41