Finding the Fourth Proportional to 22,148.91, 30,549.86 and 13,189.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,148.91 : 30,549.86 = 13,189.50 : x
2. Step 2: Convert to fraction form
   22,148.91/30,549.86 = 13,189.50/x
3. Step 3: Cross multiply
   22,148.91x = 30,549.86 × 13,189.50
4. Step 4: Simplify right side
   22,148.91x = 402,937,361.98
5. Step 5: Solve for x
   x = 402,937,361.98/22,148.91
6. Step 6: Final answer
   x = 18,192.20