Finding the Fourth Proportional to 38,499.43, 53,127.63 and 21,503.38

Step by Step Solution

1. Step 1: Write the proportion equation
   38,499.43 : 53,127.63 = 21,503.38 : x
2. Step 2: Convert to fraction form
   38,499.43/53,127.63 = 21,503.38/x
3. Step 3: Cross multiply
   38,499.43x = 53,127.63 × 21,503.38
4. Step 4: Simplify right side
   38,499.43x = 1,142,423,616.39
5. Step 5: Solve for x
   x = 1,142,423,616.39/38,499.43
6. Step 6: Final answer
   x = 29,673.78