Finding the Fourth Proportional to 22,345.10, 30,845.03 and 13,390.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,345.10 : 30,845.03 = 13,390.88 : x
2. Step 2: Convert to fraction form
   22,345.10/30,845.03 = 13,390.88/x
3. Step 3: Cross multiply
   22,345.10x = 30,845.03 × 13,390.88
4. Step 4: Simplify right side
   22,345.10x = 413,041,933.50
5. Step 5: Solve for x
   x = 413,041,933.50/22,345.10
6. Step 6: Final answer
   x = 18,484.67