Finding the Fourth Proportional to 10,970.14, 16,449.13 and 5,123.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,970.14 : 16,449.13 = 5,123.56 : x
2. Step 2: Convert to fraction form
   10,970.14/16,449.13 = 5,123.56/x
3. Step 3: Cross multiply
   10,970.14x = 16,449.13 × 5,123.56
4. Step 4: Simplify right side
   10,970.14x = 84,278,078.89
5. Step 5: Solve for x
   x = 84,278,078.89/10,970.14
6. Step 6: Final answer
   x = 7,682.50