Finding the Fourth Proportional to 11,612.48, 17,416.38 and 4,947.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,612.48 : 17,416.38 = 4,947.69 : x
2. Step 2: Convert to fraction form
   11,612.48/17,416.38 = 4,947.69/x
3. Step 3: Cross multiply
   11,612.48x = 17,416.38 × 4,947.69
4. Step 4: Simplify right side
   11,612.48x = 86,170,933.03
5. Step 5: Solve for x
   x = 86,170,933.03/11,612.48
6. Step 6: Final answer
   x = 7,420.55