Finding the Fourth Proportional to 39,123.58, 53,989.58 and 22,355.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,123.58 : 53,989.58 = 22,355.50 : x
2. Step 2: Convert to fraction form
   39,123.58/53,989.58 = 22,355.50/x
3. Step 3: Cross multiply
   39,123.58x = 53,989.58 × 22,355.50
4. Step 4: Simplify right side
   39,123.58x = 1,206,964,055.69
5. Step 5: Solve for x
   x = 1,206,964,055.69/39,123.58
6. Step 6: Final answer
   x = 30,850.04