Finding the Fourth Proportional to 22,030.57, 30,402.70 and 13,078.11

Step by Step Solution

1. Step 1: Write the proportion equation
   22,030.57 : 30,402.70 = 13,078.11 : x
2. Step 2: Convert to fraction form
   22,030.57/30,402.70 = 13,078.11/x
3. Step 3: Cross multiply
   22,030.57x = 30,402.70 × 13,078.11
4. Step 4: Simplify right side
   22,030.57x = 397,609,811.59
5. Step 5: Solve for x
   x = 397,609,811.59/22,030.57
6. Step 6: Final answer
   x = 18,048.09