Finding the Fourth Proportional to 39,222.34, 58,835.30 and 12,927.31

Step by Step Solution

1. Step 1: Write the proportion equation
   39,222.34 : 58,835.30 = 12,927.31 : x
2. Step 2: Convert to fraction form
   39,222.34/58,835.30 = 12,927.31/x
3. Step 3: Cross multiply
   39,222.34x = 58,835.30 × 12,927.31
4. Step 4: Simplify right side
   39,222.34x = 760,582,162.04
5. Step 5: Solve for x
   x = 760,582,162.04/39,222.34
6. Step 6: Final answer
   x = 19,391.55