Finding the Fourth Proportional to 11,371.83, 15,680.59 and 7,787.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,371.83 : 15,680.59 = 7,787.38 : x
2. Step 2: Convert to fraction form
   11,371.83/15,680.59 = 7,787.38/x
3. Step 3: Cross multiply
   11,371.83x = 15,680.59 × 7,787.38
4. Step 4: Simplify right side
   11,371.83x = 122,110,742.29
5. Step 5: Solve for x
   x = 122,110,742.29/11,371.83
6. Step 6: Final answer
   x = 10,738.00