Finding the Fourth Proportional to 12,726.77, 19,096.51 and 5,711.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,726.77 : 19,096.51 = 5,711.80 : x
2. Step 2: Convert to fraction form
   12,726.77/19,096.51 = 5,711.80/x
3. Step 3: Cross multiply
   12,726.77x = 19,096.51 × 5,711.80
4. Step 4: Simplify right side
   12,726.77x = 109,075,430.31
5. Step 5: Solve for x
   x = 109,075,430.31/12,726.77
6. Step 6: Final answer
   x = 8,570.55