Finding the Fourth Proportional to 7,972.32, 10,978.83 and 7,948.02

Step by Step Solution

1. Step 1: Write the proportion equation
   7,972.32 : 10,978.83 = 7,948.02 : x
2. Step 2: Convert to fraction form
   7,972.32/10,978.83 = 7,948.02/x
3. Step 3: Cross multiply
   7,972.32x = 10,978.83 × 7,948.02
4. Step 4: Simplify right side
   7,972.32x = 87,259,960.42
5. Step 5: Solve for x
   x = 87,259,960.42/7,972.32
6. Step 6: Final answer
   x = 10,945.37