Finding the Fourth Proportional to 10,945.76, 16,430.04 and 5,108

Step by Step Solution

1. Step 1: Write the proportion equation
   10,945.76 : 16,430.04 = 5,108 : x
2. Step 2: Convert to fraction form
   10,945.76/16,430.04 = 5,108/x
3. Step 3: Cross multiply
   10,945.76x = 16,430.04 × 5,108
4. Step 4: Simplify right side
   10,945.76x = 83,924,644.32
5. Step 5: Solve for x
   x = 83,924,644.32/10,945.76
6. Step 6: Final answer
   x = 7,667.32