Finding the Fourth Proportional to 10,969.58, 16,456.79 and 5,123.00

Step by Step Solution

1. Step 1: Write the proportion equation
   10,969.58 : 16,456.79 = 5,123.00 : x
2. Step 2: Convert to fraction form
   10,969.58/16,456.79 = 5,123.00/x
3. Step 3: Cross multiply
   10,969.58x = 16,456.79 × 5,123.00
4. Step 4: Simplify right side
   10,969.58x = 84,308,027.27
5. Step 5: Solve for x
   x = 84,308,027.27/10,969.58
6. Step 6: Final answer
   x = 7,685.62