Finding the Fourth Proportional to 12,983.82, 19,475.71 and 3,123.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,983.82 : 19,475.71 = 3,123.09 : x
2. Step 2: Convert to fraction form
   12,983.82/19,475.71 = 3,123.09/x
3. Step 3: Cross multiply
   12,983.82x = 19,475.71 × 3,123.09
4. Step 4: Simplify right side
   12,983.82x = 60,824,395.14
5. Step 5: Solve for x
   x = 60,824,395.14/12,983.82
6. Step 6: Final answer
   x = 4,684.63