Finding the Fourth Proportional to 11,906.76, 16,427.61 and 6,870.33

Step by Step Solution

1. Step 1: Write the proportion equation
   11,906.76 : 16,427.61 = 6,870.33 : x
2. Step 2: Convert to fraction form
   11,906.76/16,427.61 = 6,870.33/x
3. Step 3: Cross multiply
   11,906.76x = 16,427.61 × 6,870.33
4. Step 4: Simplify right side
   11,906.76x = 112,863,101.81
5. Step 5: Solve for x
   x = 112,863,101.81/11,906.76
6. Step 6: Final answer
   x = 9,478.91