Finding the Fourth Proportional to 19,300.78, 28,948.15 and 7,452.81

Step by Step Solution

1. Step 1: Write the proportion equation
   19,300.78 : 28,948.15 = 7,452.81 : x
2. Step 2: Convert to fraction form
   19,300.78/28,948.15 = 7,452.81/x
3. Step 3: Cross multiply
   19,300.78x = 28,948.15 × 7,452.81
4. Step 4: Simplify right side
   19,300.78x = 215,745,071.12
5. Step 5: Solve for x
   x = 215,745,071.12/19,300.78
6. Step 6: Final answer
   x = 11,178.05