Finding the Fourth Proportional to 31,429.89, 43,393.73 and 19,510.74

Step by Step Solution

1. Step 1: Write the proportion equation
   31,429.89 : 43,393.73 = 19,510.74 : x
2. Step 2: Convert to fraction form
   31,429.89/43,393.73 = 19,510.74/x
3. Step 3: Cross multiply
   31,429.89x = 43,393.73 × 19,510.74
4. Step 4: Simplify right side
   31,429.89x = 846,643,686.11
5. Step 5: Solve for x
   x = 846,643,686.11/31,429.89
6. Step 6: Final answer
   x = 26,937.53