Finding the Fourth Proportional to 11,381.94, 15,697.26 and 7,401.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,381.94 : 15,697.26 = 7,401.60 : x
2. Step 2: Convert to fraction form
   11,381.94/15,697.26 = 7,401.60/x
3. Step 3: Cross multiply
   11,381.94x = 15,697.26 × 7,401.60
4. Step 4: Simplify right side
   11,381.94x = 116,184,839.62
5. Step 5: Solve for x
   x = 116,184,839.62/11,381.94
6. Step 6: Final answer
   x = 10,207.82