Finding the Fourth Proportional to 10,931.56, 16,400.52 and 6,493.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,931.56 : 16,400.52 = 6,493.30 : x
2. Step 2: Convert to fraction form
   10,931.56/16,400.52 = 6,493.30/x
3. Step 3: Cross multiply
   10,931.56x = 16,400.52 × 6,493.30
4. Step 4: Simplify right side
   10,931.56x = 106,493,496.52
5. Step 5: Solve for x
   x = 106,493,496.52/10,931.56
6. Step 6: Final answer
   x = 9,741.84