Finding the Fourth Proportional to 21,603.84, 32,418.52 and 9,123.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,603.84 : 32,418.52 = 9,123.06 : x
2. Step 2: Convert to fraction form
   21,603.84/32,418.52 = 9,123.06/x
3. Step 3: Cross multiply
   21,603.84x = 32,418.52 × 9,123.06
4. Step 4: Simplify right side
   21,603.84x = 295,756,131.58
5. Step 5: Solve for x
   x = 295,756,131.58/21,603.84
6. Step 6: Final answer
   x = 13,689.98