Finding the Fourth Proportional to 39,300.72, 58,862.52 and 22,621.20

Step by Step Solution

1. Step 1: Write the proportion equation
   39,300.72 : 58,862.52 = 22,621.20 : x
2. Step 2: Convert to fraction form
   39,300.72/58,862.52 = 22,621.20/x
3. Step 3: Cross multiply
   39,300.72x = 58,862.52 × 22,621.20
4. Step 4: Simplify right side
   39,300.72x = 1,331,540,837.42
5. Step 5: Solve for x
   x = 1,331,540,837.42/39,300.72
6. Step 6: Final answer
   x = 33,880.83