Finding the Fourth Proportional to 7,972.32, 10,998.72 and 5,316.96

Step by Step Solution

1. Step 1: Write the proportion equation
   7,972.32 : 10,998.72 = 5,316.96 : x
2. Step 2: Convert to fraction form
   7,972.32/10,998.72 = 5,316.96/x
3. Step 3: Cross multiply
   7,972.32x = 10,998.72 × 5,316.96
4. Step 4: Simplify right side
   7,972.32x = 58,479,754.29
5. Step 5: Solve for x
   x = 58,479,754.29/7,972.32
6. Step 6: Final answer
   x = 7,335.35