Finding the Fourth Proportional to 11,147.29, 15,384.83 and 6,899.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,147.29 : 15,384.83 = 6,899.72 : x
2. Step 2: Convert to fraction form
   11,147.29/15,384.83 = 6,899.72/x
3. Step 3: Cross multiply
   11,147.29x = 15,384.83 × 6,899.72
4. Step 4: Simplify right side
   11,147.29x = 106,150,907.82
5. Step 5: Solve for x
   x = 106,150,907.82/11,147.29
6. Step 6: Final answer
   x = 9,522.58