Finding the Fourth Proportional to 22,603.53, 31,196.10 and 12,534.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,603.53 : 31,196.10 = 12,534.21 : x
2. Step 2: Convert to fraction form
   22,603.53/31,196.10 = 12,534.21/x
3. Step 3: Cross multiply
   22,603.53x = 31,196.10 × 12,534.21
4. Step 4: Simplify right side
   22,603.53x = 391,018,468.58
5. Step 5: Solve for x
   x = 391,018,468.58/22,603.53
6. Step 6: Final answer
   x = 17,299.00