Finding the Fourth Proportional to 21,060.14, 29,062.53 and 13,881.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,060.14 : 29,062.53 = 13,881.38 : x
2. Step 2: Convert to fraction form
   21,060.14/29,062.53 = 13,881.38/x
3. Step 3: Cross multiply
   21,060.14x = 29,062.53 × 13,881.38
4. Step 4: Simplify right side
   21,060.14x = 403,428,022.69
5. Step 5: Solve for x
   x = 403,428,022.69/21,060.14
6. Step 6: Final answer
   x = 19,156.00