Finding the Fourth Proportional to 31,782.94, 43,870.53 and 22,379.02

Step by Step Solution

1. Step 1: Write the proportion equation
   31,782.94 : 43,870.53 = 22,379.02 : x
2. Step 2: Convert to fraction form
   31,782.94/43,870.53 = 22,379.02/x
3. Step 3: Cross multiply
   31,782.94x = 43,870.53 × 22,379.02
4. Step 4: Simplify right side
   31,782.94x = 981,779,468.28
5. Step 5: Solve for x
   x = 981,779,468.28/31,782.94
6. Step 6: Final answer
   x = 30,890.14