Finding the Fourth Proportional to 22,538.32, 31,105.59 and 13,106.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,538.32 : 31,105.59 = 13,106.88 : x
2. Step 2: Convert to fraction form
   22,538.32/31,105.59 = 13,106.88/x
3. Step 3: Cross multiply
   22,538.32x = 31,105.59 × 13,106.88
4. Step 4: Simplify right side
   22,538.32x = 407,697,235.46
5. Step 5: Solve for x
   x = 407,697,235.46/22,538.32
6. Step 6: Final answer
   x = 18,089.07