Finding the Fourth Proportional to 10,937.09, 16,405.88 and 3,917.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,937.09 : 16,405.88 = 3,917.57 : x
2. Step 2: Convert to fraction form
   10,937.09/16,405.88 = 3,917.57/x
3. Step 3: Cross multiply
   10,937.09x = 16,405.88 × 3,917.57
4. Step 4: Simplify right side
   10,937.09x = 64,271,081.69
5. Step 5: Solve for x
   x = 64,271,081.69/10,937.09
6. Step 6: Final answer
   x = 5,876.43