Finding the Fourth Proportional to 11,300.67, 16,947.60 and 4,278.33

Step by Step Solution

1. Step 1: Write the proportion equation
   11,300.67 : 16,947.60 = 4,278.33 : x
2. Step 2: Convert to fraction form
   11,300.67/16,947.60 = 4,278.33/x
3. Step 3: Cross multiply
   11,300.67x = 16,947.60 × 4,278.33
4. Step 4: Simplify right side
   11,300.67x = 72,507,425.51
5. Step 5: Solve for x
   x = 72,507,425.51/11,300.67
6. Step 6: Final answer
   x = 6,416.21