Finding the Fourth Proportional to 10,930.04, 16,389.40 and 3,907.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,930.04 : 16,389.40 = 3,907.36 : x
2. Step 2: Convert to fraction form
   10,930.04/16,389.40 = 3,907.36/x
3. Step 3: Cross multiply
   10,930.04x = 16,389.40 × 3,907.36
4. Step 4: Simplify right side
   10,930.04x = 64,039,285.98
5. Step 5: Solve for x
   x = 64,039,285.98/10,930.04
6. Step 6: Final answer
   x = 5,859.02