Finding the Fourth Proportional to 19,296.83, 28,931.57 and 7,440.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,296.83 : 28,931.57 = 7,440.56 : x
2. Step 2: Convert to fraction form
   19,296.83/28,931.57 = 7,440.56/x
3. Step 3: Cross multiply
   19,296.83x = 28,931.57 × 7,440.56
4. Step 4: Simplify right side
   19,296.83x = 215,266,937.82
5. Step 5: Solve for x
   x = 215,266,937.82/19,296.83
6. Step 6: Final answer
   x = 11,155.56