Finding the Fourth Proportional to 38,435.24, 53,034.54 and 21,665

Step by Step Solution

1. Step 1: Write the proportion equation
   38,435.24 : 53,034.54 = 21,665 : x
2. Step 2: Convert to fraction form
   38,435.24/53,034.54 = 21,665/x
3. Step 3: Cross multiply
   38,435.24x = 53,034.54 × 21,665
4. Step 4: Simplify right side
   38,435.24x = 1,148,993,309.10
5. Step 5: Solve for x
   x = 1,148,993,309.10/38,435.24
6. Step 6: Final answer
   x = 29,894.27