Finding the Fourth Proportional to 19,607.72, 27,048.30 and 12,424.96

Step by Step Solution

1. Step 1: Write the proportion equation
   19,607.72 : 27,048.30 = 12,424.96 : x
2. Step 2: Convert to fraction form
   19,607.72/27,048.30 = 12,424.96/x
3. Step 3: Cross multiply
   19,607.72x = 27,048.30 × 12,424.96
4. Step 4: Simplify right side
   19,607.72x = 336,074,045.57
5. Step 5: Solve for x
   x = 336,074,045.57/19,607.72
6. Step 6: Final answer
   x = 17,139.88