Finding the Fourth Proportional to 11,876.33, 16,389.20 and 6,498.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,876.33 : 16,389.20 = 6,498.72 : x
2. Step 2: Convert to fraction form
   11,876.33/16,389.20 = 6,498.72/x
3. Step 3: Cross multiply
   11,876.33x = 16,389.20 × 6,498.72
4. Step 4: Simplify right side
   11,876.33x = 106,508,821.82
5. Step 5: Solve for x
   x = 106,508,821.82/11,876.33
6. Step 6: Final answer
   x = 8,968.16