Finding the Fourth Proportional to 11,379.78, 15,695.20 and 7,402.17

Step by Step Solution

1. Step 1: Write the proportion equation
   11,379.78 : 15,695.20 = 7,402.17 : x
2. Step 2: Convert to fraction form
   11,379.78/15,695.20 = 7,402.17/x
3. Step 3: Cross multiply
   11,379.78x = 15,695.20 × 7,402.17
4. Step 4: Simplify right side
   11,379.78x = 116,178,441.60
5. Step 5: Solve for x
   x = 116,178,441.60/11,379.78
6. Step 6: Final answer
   x = 10,209.20