Finding the Fourth Proportional to 19,820.45, 29,722.03 and 7,499.81

Step by Step Solution

1. Step 1: Write the proportion equation
   19,820.45 : 29,722.03 = 7,499.81 : x
2. Step 2: Convert to fraction form
   19,820.45/29,722.03 = 7,499.81/x
3. Step 3: Cross multiply
   19,820.45x = 29,722.03 × 7,499.81
4. Step 4: Simplify right side
   19,820.45x = 222,909,633.37
5. Step 5: Solve for x
   x = 222,909,633.37/19,820.45
6. Step 6: Final answer
   x = 11,246.45