Finding the Fourth Proportional to 12,384.02, 17,112.54 and 9,020.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,384.02 : 17,112.54 = 9,020.96 : x
2. Step 2: Convert to fraction form
   12,384.02/17,112.54 = 9,020.96/x
3. Step 3: Cross multiply
   12,384.02x = 17,112.54 × 9,020.96
4. Step 4: Simplify right side
   12,384.02x = 154,371,538.84
5. Step 5: Solve for x
   x = 154,371,538.84/12,384.02
6. Step 6: Final answer
   x = 12,465.38