Finding the Fourth Proportional to 28,603.98, 42,901.37 and 7,822.62

Step by Step Solution

1. Step 1: Write the proportion equation
   28,603.98 : 42,901.37 = 7,822.62 : x
2. Step 2: Convert to fraction form
   28,603.98/42,901.37 = 7,822.62/x
3. Step 3: Cross multiply
   28,603.98x = 42,901.37 × 7,822.62
4. Step 4: Simplify right side
   28,603.98x = 335,601,114.99
5. Step 5: Solve for x
   x = 335,601,114.99/28,603.98
6. Step 6: Final answer
   x = 11,732.67