Finding the Fourth Proportional to 21,493, 29,663.58 and 13,114.36

Step by Step Solution

1. Step 1: Write the proportion equation
   21,493 : 29,663.58 = 13,114.36 : x
2. Step 2: Convert to fraction form
   21,493/29,663.58 = 13,114.36/x
3. Step 3: Cross multiply
   21,493x = 29,663.58 × 13,114.36
4. Step 4: Simplify right side
   21,493x = 389,018,867.01
5. Step 5: Solve for x
   x = 389,018,867.01/21,493
6. Step 6: Final answer
   x = 18,099.79