Finding the Fourth Proportional to 9,359.82, 12,916.71 and 5,111.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,359.82 : 12,916.71 = 5,111.10 : x
2. Step 2: Convert to fraction form
   9,359.82/12,916.71 = 5,111.10/x
3. Step 3: Cross multiply
   9,359.82x = 12,916.71 × 5,111.10
4. Step 4: Simplify right side
   9,359.82x = 66,018,596.48
5. Step 5: Solve for x
   x = 66,018,596.48/9,359.82
6. Step 6: Final answer
   x = 7,053.40