Finding the Fourth Proportional to 34,429.15, 51,644.18 and 19,620.43

Step by Step Solution

1. Step 1: Write the proportion equation
   34,429.15 : 51,644.18 = 19,620.43 : x
2. Step 2: Convert to fraction form
   34,429.15/51,644.18 = 19,620.43/x
3. Step 3: Cross multiply
   34,429.15x = 51,644.18 × 19,620.43
4. Step 4: Simplify right side
   34,429.15x = 1,013,280,938.54
5. Step 5: Solve for x
   x = 1,013,280,938.54/34,429.15
6. Step 6: Final answer
   x = 29,430.90