Finding the Fourth Proportional to 12,762.15, 19,110.41 and 7,816.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,762.15 : 19,110.41 = 7,816.79 : x
2. Step 2: Convert to fraction form
   12,762.15/19,110.41 = 7,816.79/x
3. Step 3: Cross multiply
   12,762.15x = 19,110.41 × 7,816.79
4. Step 4: Simplify right side
   12,762.15x = 149,382,061.78
5. Step 5: Solve for x
   x = 149,382,061.78/12,762.15
6. Step 6: Final answer
   x = 11,705.09