Finding the Fourth Proportional to 11,870.26, 16,380.28 and 6,564.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.26 : 16,380.28 = 6,564.72 : x
2. Step 2: Convert to fraction form
   11,870.26/16,380.28 = 6,564.72/x
3. Step 3: Cross multiply
   11,870.26x = 16,380.28 × 6,564.72
4. Step 4: Simplify right side
   11,870.26x = 107,531,951.72
5. Step 5: Solve for x
   x = 107,531,951.72/11,870.26
6. Step 6: Final answer
   x = 9,058.94