Finding the Fourth Proportional to 28,071, 38,764.71 and 22,091.99

Step by Step Solution

1. Step 1: Write the proportion equation
   28,071 : 38,764.71 = 22,091.99 : x
2. Step 2: Convert to fraction form
   28,071/38,764.71 = 22,091.99/x
3. Step 3: Cross multiply
   28,071x = 38,764.71 × 22,091.99
4. Step 4: Simplify right side
   28,071x = 856,389,391.85
5. Step 5: Solve for x
   x = 856,389,391.85/28,071
6. Step 6: Final answer
   x = 30,507.98