Finding the Fourth Proportional to 21,047.90, 29,055.56 and 13,882.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,047.90 : 29,055.56 = 13,882.05 : x
2. Step 2: Convert to fraction form
   21,047.90/29,055.56 = 13,882.05/x
3. Step 3: Cross multiply
   21,047.90x = 29,055.56 × 13,882.05
4. Step 4: Simplify right side
   21,047.90x = 403,350,667.29
5. Step 5: Solve for x
   x = 403,350,667.29/21,047.90
6. Step 6: Final answer
   x = 19,163.47