Finding the Fourth Proportional to 10,732.16, 16,099.97 and 5,185.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,732.16 : 16,099.97 = 5,185.91 : x
2. Step 2: Convert to fraction form
   10,732.16/16,099.97 = 5,185.91/x
3. Step 3: Cross multiply
   10,732.16x = 16,099.97 × 5,185.91
4. Step 4: Simplify right side
   10,732.16x = 83,493,009.40
5. Step 5: Solve for x
   x = 83,493,009.40/10,732.16
6. Step 6: Final answer
   x = 7,779.70