Finding the Fourth Proportional to 12,930.96, 19,404.54 and 5,909.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,930.96 : 19,404.54 = 5,909.88 : x
2. Step 2: Convert to fraction form
   12,930.96/19,404.54 = 5,909.88/x
3. Step 3: Cross multiply
   12,930.96x = 19,404.54 × 5,909.88
4. Step 4: Simplify right side
   12,930.96x = 114,678,502.86
5. Step 5: Solve for x
   x = 114,678,502.86/12,930.96
6. Step 6: Final answer
   x = 8,868.52