Finding the Fourth Proportional to 30,922.42, 42,656.61 and 21,973.54

Step by Step Solution

1. Step 1: Write the proportion equation
   30,922.42 : 42,656.61 = 21,973.54 : x
2. Step 2: Convert to fraction form
   30,922.42/42,656.61 = 21,973.54/x
3. Step 3: Cross multiply
   30,922.42x = 42,656.61 × 21,973.54
4. Step 4: Simplify right side
   30,922.42x = 937,316,726.10
5. Step 5: Solve for x
   x = 937,316,726.10/30,922.42
6. Step 6: Final answer
   x = 30,311.88