Finding the Fourth Proportional to 22,168.86, 30,583.80 and 13,780.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,168.86 : 30,583.80 = 13,780.50 : x
2. Step 2: Convert to fraction form
   22,168.86/30,583.80 = 13,780.50/x
3. Step 3: Cross multiply
   22,168.86x = 30,583.80 × 13,780.50
4. Step 4: Simplify right side
   22,168.86x = 421,460,055.90
5. Step 5: Solve for x
   x = 421,460,055.90/22,168.86
6. Step 6: Final answer
   x = 19,011.35