Finding the Fourth Proportional to 22,342.02, 30,830.18 and 12,911.19

Step by Step Solution

1. Step 1: Write the proportion equation
   22,342.02 : 30,830.18 = 12,911.19 : x
2. Step 2: Convert to fraction form
   22,342.02/30,830.18 = 12,911.19/x
3. Step 3: Cross multiply
   22,342.02x = 30,830.18 × 12,911.19
4. Step 4: Simplify right side
   22,342.02x = 398,054,311.71
5. Step 5: Solve for x
   x = 398,054,311.71/22,342.02
6. Step 6: Final answer
   x = 17,816.40