Finding the Fourth Proportional to 21,142.01, 29,109.54 and 17,948.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,142.01 : 29,109.54 = 17,948.69 : x
2. Step 2: Convert to fraction form
   21,142.01/29,109.54 = 17,948.69/x
3. Step 3: Cross multiply
   21,142.01x = 29,109.54 × 17,948.69
4. Step 4: Simplify right side
   21,142.01x = 522,478,140.42
5. Step 5: Solve for x
   x = 522,478,140.42/21,142.01
6. Step 6: Final answer
   x = 24,712.79