Finding the Fourth Proportional to 19,005.49, 28,504.95 and 5,151.25

Step by Step Solution

1. Step 1: Write the proportion equation
   19,005.49 : 28,504.95 = 5,151.25 : x
2. Step 2: Convert to fraction form
   19,005.49/28,504.95 = 5,151.25/x
3. Step 3: Cross multiply
   19,005.49x = 28,504.95 × 5,151.25
4. Step 4: Simplify right side
   19,005.49x = 146,836,123.69
5. Step 5: Solve for x
   x = 146,836,123.69/19,005.49
6. Step 6: Final answer
   x = 7,725.98