Finding the Fourth Proportional to 9,045.45, 13,569.81 and 3,123

Step by Step Solution

1. Step 1: Write the proportion equation
   9,045.45 : 13,569.81 = 3,123 : x
2. Step 2: Convert to fraction form
   9,045.45/13,569.81 = 3,123/x
3. Step 3: Cross multiply
   9,045.45x = 13,569.81 × 3,123
4. Step 4: Simplify right side
   9,045.45x = 42,378,516.63
5. Step 5: Solve for x
   x = 42,378,516.63/9,045.45
6. Step 6: Final answer
   x = 4,685.06