Finding the Fourth Proportional to 11,422.17, 17,092.70 and 6,978.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,422.17 : 17,092.70 = 6,978.48 : x
2. Step 2: Convert to fraction form
   11,422.17/17,092.70 = 6,978.48/x
3. Step 3: Cross multiply
   11,422.17x = 17,092.70 × 6,978.48
4. Step 4: Simplify right side
   11,422.17x = 119,281,065.10
5. Step 5: Solve for x
   x = 119,281,065.10/11,422.17
6. Step 6: Final answer
   x = 10,442.94