Finding the Fourth Proportional to 12,783.02, 17,636.33 and 7,474.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,783.02 : 17,636.33 = 7,474.07 : x
2. Step 2: Convert to fraction form
   12,783.02/17,636.33 = 7,474.07/x
3. Step 3: Cross multiply
   12,783.02x = 17,636.33 × 7,474.07
4. Step 4: Simplify right side
   12,783.02x = 131,815,227.74
5. Step 5: Solve for x
   x = 131,815,227.74/12,783.02
6. Step 6: Final answer
   x = 10,311.75