Finding the Fourth Proportional to 39,011.72, 53,837.55 and 22,020.08

Step by Step Solution

1. Step 1: Write the proportion equation
   39,011.72 : 53,837.55 = 22,020.08 : x
2. Step 2: Convert to fraction form
   39,011.72/53,837.55 = 22,020.08/x
3. Step 3: Cross multiply
   39,011.72x = 53,837.55 × 22,020.08
4. Step 4: Simplify right side
   39,011.72x = 1,185,507,047.90
5. Step 5: Solve for x
   x = 1,185,507,047.90/39,011.72
6. Step 6: Final answer
   x = 30,388.48