Finding the Fourth Proportional to 7,911.19, 10,916.58 and 5,116.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,911.19 : 10,916.58 = 5,116.69 : x
2. Step 2: Convert to fraction form
   7,911.19/10,916.58 = 5,116.69/x
3. Step 3: Cross multiply
   7,911.19x = 10,916.58 × 5,116.69
4. Step 4: Simplify right side
   7,911.19x = 55,856,755.72
5. Step 5: Solve for x
   x = 55,856,755.72/7,911.19
6. Step 6: Final answer
   x = 7,060.47