Finding the Fourth Proportional to 19,820.96, 29,722.78 and 7,500.32

Step by Step Solution

1. Step 1: Write the proportion equation
   19,820.96 : 29,722.78 = 7,500.32 : x
2. Step 2: Convert to fraction form
   19,820.96/29,722.78 = 7,500.32/x
3. Step 3: Cross multiply
   19,820.96x = 29,722.78 × 7,500.32
4. Step 4: Simplify right side
   19,820.96x = 222,930,175.17
5. Step 5: Solve for x
   x = 222,930,175.17/19,820.96
6. Step 6: Final answer
   x = 11,247.20