Finding the Fourth Proportional to 11,085.10, 16,631.70 and 5,237.32

Step by Step Solution

1. Step 1: Write the proportion equation
   11,085.10 : 16,631.70 = 5,237.32 : x
2. Step 2: Convert to fraction form
   11,085.10/16,631.70 = 5,237.32/x
3. Step 3: Cross multiply
   11,085.10x = 16,631.70 × 5,237.32
4. Step 4: Simplify right side
   11,085.10x = 87,105,535.04
5. Step 5: Solve for x
   x = 87,105,535.04/11,085.10
6. Step 6: Final answer
   x = 7,857.89