Finding the Fourth Proportional to 34,548.72, 51,791.40 and 12,356.88

Step by Step Solution

1. Step 1: Write the proportion equation
   34,548.72 : 51,791.40 = 12,356.88 : x
2. Step 2: Convert to fraction form
   34,548.72/51,791.40 = 12,356.88/x
3. Step 3: Cross multiply
   34,548.72x = 51,791.40 × 12,356.88
4. Step 4: Simplify right side
   34,548.72x = 639,980,114.83
5. Step 5: Solve for x
   x = 639,980,114.83/34,548.72
6. Step 6: Final answer
   x = 18,523.99