Finding the Fourth Proportional to 28,061.62, 42,094.69 and 8,340.19

Step by Step Solution

1. Step 1: Write the proportion equation
   28,061.62 : 42,094.69 = 8,340.19 : x
2. Step 2: Convert to fraction form
   28,061.62/42,094.69 = 8,340.19/x
3. Step 3: Cross multiply
   28,061.62x = 42,094.69 × 8,340.19
4. Step 4: Simplify right side
   28,061.62x = 351,077,586.50
5. Step 5: Solve for x
   x = 351,077,586.50/28,061.62
6. Step 6: Final answer
   x = 12,510.95