Finding the Fourth Proportional to 11,042.07, 16,561.29 and 5,118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,042.07 : 16,561.29 = 5,118.72 : x
2. Step 2: Convert to fraction form
   11,042.07/16,561.29 = 5,118.72/x
3. Step 3: Cross multiply
   11,042.07x = 16,561.29 × 5,118.72
4. Step 4: Simplify right side
   11,042.07x = 84,772,566.83
5. Step 5: Solve for x
   x = 84,772,566.83/11,042.07
6. Step 6: Final answer
   x = 7,677.23