Finding the Fourth Proportional to 12,774.12, 17,623.28 and 9,424.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,774.12 : 17,623.28 = 9,424.98 : x
2. Step 2: Convert to fraction form
   12,774.12/17,623.28 = 9,424.98/x
3. Step 3: Cross multiply
   12,774.12x = 17,623.28 × 9,424.98
4. Step 4: Simplify right side
   12,774.12x = 166,099,061.53
5. Step 5: Solve for x
   x = 166,099,061.53/12,774.12
6. Step 6: Final answer
   x = 13,002.78