Finding the Fourth Proportional to 21,030.56, 29,002.56 and 13,950.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,030.56 : 29,002.56 = 13,950.08 : x
2. Step 2: Convert to fraction form
   21,030.56/29,002.56 = 13,950.08/x
3. Step 3: Cross multiply
   21,030.56x = 29,002.56 × 13,950.08
4. Step 4: Simplify right side
   21,030.56x = 404,588,032.20
5. Step 5: Solve for x
   x = 404,588,032.20/21,030.56
6. Step 6: Final answer
   x = 19,238.10