Finding the Fourth Proportional to 10,511.35, 14,505.21 and 5,731.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,511.35 : 14,505.21 = 5,731.18 : x
2. Step 2: Convert to fraction form
   10,511.35/14,505.21 = 5,731.18/x
3. Step 3: Cross multiply
   10,511.35x = 14,505.21 × 5,731.18
4. Step 4: Simplify right side
   10,511.35x = 83,131,969.45
5. Step 5: Solve for x
   x = 83,131,969.45/10,511.35
6. Step 6: Final answer
   x = 7,908.78