Finding the Fourth Proportional to 13,039.65, 17,994.98 and 7,374.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,039.65 : 17,994.98 = 7,374.42 : x
2. Step 2: Convert to fraction form
   13,039.65/17,994.98 = 7,374.42/x
3. Step 3: Cross multiply
   13,039.65x = 17,994.98 × 7,374.42
4. Step 4: Simplify right side
   13,039.65x = 132,702,558.85
5. Step 5: Solve for x
   x = 132,702,558.85/13,039.65
6. Step 6: Final answer
   x = 10,176.85