Finding the Fourth Proportional to 38,983.05, 53,796.54 and 21,987.24

Step by Step Solution

1. Step 1: Write the proportion equation
   38,983.05 : 53,796.54 = 21,987.24 : x
2. Step 2: Convert to fraction form
   38,983.05/53,796.54 = 21,987.24/x
3. Step 3: Cross multiply
   38,983.05x = 53,796.54 × 21,987.24
4. Step 4: Simplify right side
   38,983.05x = 1,182,837,637.89
5. Step 5: Solve for x
   x = 1,182,837,637.89/38,983.05
6. Step 6: Final answer
   x = 30,342.35