Finding the Fourth Proportional to 10,980.81, 16,472.82 and 3,188.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,980.81 : 16,472.82 = 3,188.61 : x
2. Step 2: Convert to fraction form
   10,980.81/16,472.82 = 3,188.61/x
3. Step 3: Cross multiply
   10,980.81x = 16,472.82 × 3,188.61
4. Step 4: Simplify right side
   10,980.81x = 52,525,398.58
5. Step 5: Solve for x
   x = 52,525,398.58/10,980.81
6. Step 6: Final answer
   x = 4,783.38