Finding the Fourth Proportional to 31,784.02, 43,878.28 and 22,394.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,784.02 : 43,878.28 = 22,394.50 : x
2. Step 2: Convert to fraction form
   31,784.02/43,878.28 = 22,394.50/x
3. Step 3: Cross multiply
   31,784.02x = 43,878.28 × 22,394.50
4. Step 4: Simplify right side
   31,784.02x = 982,632,141.46
5. Step 5: Solve for x
   x = 982,632,141.46/31,784.02
6. Step 6: Final answer
   x = 30,915.92