Finding the Fourth Proportional to 10,730.07, 16,091.06 and 5,181.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,730.07 : 16,091.06 = 5,181.57 : x
2. Step 2: Convert to fraction form
   10,730.07/16,091.06 = 5,181.57/x
3. Step 3: Cross multiply
   10,730.07x = 16,091.06 × 5,181.57
4. Step 4: Simplify right side
   10,730.07x = 83,376,927.86
5. Step 5: Solve for x
   x = 83,376,927.86/10,730.07
6. Step 6: Final answer
   x = 7,770.40