Finding the Fourth Proportional to 7,237.42, 9,978.07 and 5,219.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,237.42 : 9,978.07 = 5,219.15 : x
2. Step 2: Convert to fraction form
   7,237.42/9,978.07 = 5,219.15/x
3. Step 3: Cross multiply
   7,237.42x = 9,978.07 × 5,219.15
4. Step 4: Simplify right side
   7,237.42x = 52,077,044.04
5. Step 5: Solve for x
   x = 52,077,044.04/7,237.42
6. Step 6: Final answer
   x = 7,195.53