Finding the Fourth Proportional to 21,938.02, 32,900.37 and 18,429.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,938.02 : 32,900.37 = 18,429.10 : x
2. Step 2: Convert to fraction form
   21,938.02/32,900.37 = 18,429.10/x
3. Step 3: Cross multiply
   21,938.02x = 32,900.37 × 18,429.10
4. Step 4: Simplify right side
   21,938.02x = 606,324,208.77
5. Step 5: Solve for x
   x = 606,324,208.77/21,938.02
6. Step 6: Final answer
   x = 27,638.06