Finding the Fourth Proportional to 10,953.47, 15,115.78 and 5,917.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,953.47 : 15,115.78 = 5,917.69 : x
2. Step 2: Convert to fraction form
   10,953.47/15,115.78 = 5,917.69/x
3. Step 3: Cross multiply
   10,953.47x = 15,115.78 × 5,917.69
4. Step 4: Simplify right side
   10,953.47x = 89,450,526.44
5. Step 5: Solve for x
   x = 89,450,526.44/10,953.47
6. Step 6: Final answer
   x = 8,166.41