Finding the Fourth Proportional to 34,012.51, 51,036.05 and 15,288.78

Step by Step Solution

1. Step 1: Write the proportion equation
   34,012.51 : 51,036.05 = 15,288.78 : x
2. Step 2: Convert to fraction form
   34,012.51/51,036.05 = 15,288.78/x
3. Step 3: Cross multiply
   34,012.51x = 51,036.05 × 15,288.78
4. Step 4: Simplify right side
   34,012.51x = 780,278,608.89
5. Step 5: Solve for x
   x = 780,278,608.89/34,012.51
6. Step 6: Final answer
   x = 22,940.93