Finding the Fourth Proportional to 3,123.45, 4,315.43 and 3,092.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.45 : 4,315.43 = 3,092.73 : x
2. Step 2: Convert to fraction form
   3,123.45/4,315.43 = 3,092.73/x
3. Step 3: Cross multiply
   3,123.45x = 4,315.43 × 3,092.73
4. Step 4: Simplify right side
   3,123.45x = 13,346,444.36
5. Step 5: Solve for x
   x = 13,346,444.36/3,123.45
6. Step 6: Final answer
   x = 4,272.98