Finding the Fourth Proportional to 11,146.89, 16,715.47 and 4,216.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,146.89 : 16,715.47 = 4,216.53 : x
2. Step 2: Convert to fraction form
   11,146.89/16,715.47 = 4,216.53/x
3. Step 3: Cross multiply
   11,146.89x = 16,715.47 × 4,216.53
4. Step 4: Simplify right side
   11,146.89x = 70,481,238.93
5. Step 5: Solve for x
   x = 70,481,238.93/11,146.89
6. Step 6: Final answer
   x = 6,322.95