Finding the Fourth Proportional to 31,870.56, 47,821.91 and 22,570.35

Step by Step Solution

1. Step 1: Write the proportion equation
   31,870.56 : 47,821.91 = 22,570.35 : x
2. Step 2: Convert to fraction form
   31,870.56/47,821.91 = 22,570.35/x
3. Step 3: Cross multiply
   31,870.56x = 47,821.91 × 22,570.35
4. Step 4: Simplify right side
   31,870.56x = 1,079,357,133.52
5. Step 5: Solve for x
   x = 1,079,357,133.52/31,870.56
6. Step 6: Final answer
   x = 33,866.90