Finding the Fourth Proportional to 12,933.40, 19,401.90 and 5,537.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,933.40 : 19,401.90 = 5,537.80 : x
2. Step 2: Convert to fraction form
   12,933.40/19,401.90 = 5,537.80/x
3. Step 3: Cross multiply
   12,933.40x = 19,401.90 × 5,537.80
4. Step 4: Simplify right side
   12,933.40x = 107,443,841.82
5. Step 5: Solve for x
   x = 107,443,841.82/12,933.40
6. Step 6: Final answer
   x = 8,307.47