Finding the Fourth Proportional to 7,116.32, 9,820.53 and 3,972.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,116.32 : 9,820.53 = 3,972.50 : x
2. Step 2: Convert to fraction form
   7,116.32/9,820.53 = 3,972.50/x
3. Step 3: Cross multiply
   7,116.32x = 9,820.53 × 3,972.50
4. Step 4: Simplify right side
   7,116.32x = 39,012,035.56
5. Step 5: Solve for x
   x = 39,012,035.56/7,116.32
6. Step 6: Final answer
   x = 5,482.06