Finding the Fourth Proportional to 11,719.72, 17,569.86 and 4,322.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,719.72 : 17,569.86 = 4,322.80 : x
2. Step 2: Convert to fraction form
   11,719.72/17,569.86 = 4,322.80/x
3. Step 3: Cross multiply
   11,719.72x = 17,569.86 × 4,322.80
4. Step 4: Simplify right side
   11,719.72x = 75,950,990.81
5. Step 5: Solve for x
   x = 75,950,990.81/11,719.72
6. Step 6: Final answer
   x = 6,480.61