Finding the Fourth Proportional to 12,783.77, 17,637.37 and 7,474.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,783.77 : 17,637.37 = 7,474.82 : x
2. Step 2: Convert to fraction form
   12,783.77/17,637.37 = 7,474.82/x
3. Step 3: Cross multiply
   12,783.77x = 17,637.37 × 7,474.82
4. Step 4: Simplify right side
   12,783.77x = 131,836,191.43
5. Step 5: Solve for x
   x = 131,836,191.43/12,783.77
6. Step 6: Final answer
   x = 10,312.78