Finding the Fourth Proportional to 19,012.32, 28,499.04 and 7,320.96

Step by Step Solution

1. Step 1: Write the proportion equation
   19,012.32 : 28,499.04 = 7,320.96 : x
2. Step 2: Convert to fraction form
   19,012.32/28,499.04 = 7,320.96/x
3. Step 3: Cross multiply
   19,012.32x = 28,499.04 × 7,320.96
4. Step 4: Simplify right side
   19,012.32x = 208,640,331.88
5. Step 5: Solve for x
   x = 208,640,331.88/19,012.32
6. Step 6: Final answer
   x = 10,973.95