Finding the Fourth Proportional to 10,978.18, 16,470.93 and 7,294.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.18 : 16,470.93 = 7,294.90 : x
2. Step 2: Convert to fraction form
   10,978.18/16,470.93 = 7,294.90/x
3. Step 3: Cross multiply
   10,978.18x = 16,470.93 × 7,294.90
4. Step 4: Simplify right side
   10,978.18x = 120,153,787.26
5. Step 5: Solve for x
   x = 120,153,787.26/10,978.18
6. Step 6: Final answer
   x = 10,944.78