Finding the Fourth Proportional to 12,769.95, 19,149.82 and 7,515.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,769.95 : 19,149.82 = 7,515.59 : x
2. Step 2: Convert to fraction form
   12,769.95/19,149.82 = 7,515.59/x
3. Step 3: Cross multiply
   12,769.95x = 19,149.82 × 7,515.59
4. Step 4: Simplify right side
   12,769.95x = 143,922,081.16
5. Step 5: Solve for x
   x = 143,922,081.16/12,769.95
6. Step 6: Final answer
   x = 11,270.37