Finding the Fourth Proportional to 31,510.93, 43,470.91 and 21,298.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,510.93 : 43,470.91 = 21,298.69 : x
2. Step 2: Convert to fraction form
   31,510.93/43,470.91 = 21,298.69/x
3. Step 3: Cross multiply
   31,510.93x = 43,470.91 × 21,298.69
4. Step 4: Simplify right side
   31,510.93x = 925,873,436.11
5. Step 5: Solve for x
   x = 925,873,436.11/31,510.93
6. Step 6: Final answer
   x = 29,382.61