Finding the Fourth Proportional to 9,003.38, 12,419.15 and 5,978.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,003.38 : 12,419.15 = 5,978.63 : x
2. Step 2: Convert to fraction form
   9,003.38/12,419.15 = 5,978.63/x
3. Step 3: Cross multiply
   9,003.38x = 12,419.15 × 5,978.63
4. Step 4: Simplify right side
   9,003.38x = 74,249,503.92
5. Step 5: Solve for x
   x = 74,249,503.92/9,003.38
6. Step 6: Final answer
   x = 8,246.85