Finding the Fourth Proportional to 38,483.89, 53,107.25 and 21,488.42

Step by Step Solution

1. Step 1: Write the proportion equation
   38,483.89 : 53,107.25 = 21,488.42 : x
2. Step 2: Convert to fraction form
   38,483.89/53,107.25 = 21,488.42/x
3. Step 3: Cross multiply
   38,483.89x = 53,107.25 × 21,488.42
4. Step 4: Simplify right side
   38,483.89x = 1,141,190,681.23
5. Step 5: Solve for x
   x = 1,141,190,681.23/38,483.89
6. Step 6: Final answer
   x = 29,653.73