Finding the Fourth Proportional to 12,909.34, 17,814.06 and 7,603.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,909.34 : 17,814.06 = 7,603.12 : x
2. Step 2: Convert to fraction form
   12,909.34/17,814.06 = 7,603.12/x
3. Step 3: Cross multiply
   12,909.34x = 17,814.06 × 7,603.12
4. Step 4: Simplify right side
   12,909.34x = 135,442,435.87
5. Step 5: Solve for x
   x = 135,442,435.87/12,909.34
6. Step 6: Final answer
   x = 10,491.82