Finding the Fourth Proportional to 12,073.96, 16,663.59 and 7,038.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,073.96 : 16,663.59 = 7,038.40 : x
2. Step 2: Convert to fraction form
   12,073.96/16,663.59 = 7,038.40/x
3. Step 3: Cross multiply
   12,073.96x = 16,663.59 × 7,038.40
4. Step 4: Simplify right side
   12,073.96x = 117,285,011.86
5. Step 5: Solve for x
   x = 117,285,011.86/12,073.96
6. Step 6: Final answer
   x = 9,713.88