Finding the Fourth Proportional to 10,313.52, 15,471.72 and 5,118

Step by Step Solution

1. Step 1: Write the proportion equation
   10,313.52 : 15,471.72 = 5,118 : x
2. Step 2: Convert to fraction form
   10,313.52/15,471.72 = 5,118/x
3. Step 3: Cross multiply
   10,313.52x = 15,471.72 × 5,118
4. Step 4: Simplify right side
   10,313.52x = 79,184,262.96
5. Step 5: Solve for x
   x = 79,184,262.96/10,313.52
6. Step 6: Final answer
   x = 7,677.71