Finding the Fourth Proportional to 10,897.16, 16,342.86 and 3,106.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,897.16 : 16,342.86 = 3,106.40 : x
2. Step 2: Convert to fraction form
   10,897.16/16,342.86 = 3,106.40/x
3. Step 3: Cross multiply
   10,897.16x = 16,342.86 × 3,106.40
4. Step 4: Simplify right side
   10,897.16x = 50,767,460.30
5. Step 5: Solve for x
   x = 50,767,460.30/10,897.16
6. Step 6: Final answer
   x = 4,658.78