Finding the Fourth Proportional to 19,162.74, 28,740.84 and 5,308.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,162.74 : 28,740.84 = 5,308.50 : x
2. Step 2: Convert to fraction form
   19,162.74/28,740.84 = 5,308.50/x
3. Step 3: Cross multiply
   19,162.74x = 28,740.84 × 5,308.50
4. Step 4: Simplify right side
   19,162.74x = 152,570,749.14
5. Step 5: Solve for x
   x = 152,570,749.14/19,162.74
6. Step 6: Final answer
   x = 7,961.84