Finding the Fourth Proportional to 22,538.76, 31,109.73 and 13,109.13

Step by Step Solution

1. Step 1: Write the proportion equation
   22,538.76 : 31,109.73 = 13,109.13 : x
2. Step 2: Convert to fraction form
   22,538.76/31,109.73 = 13,109.13/x
3. Step 3: Cross multiply
   22,538.76x = 31,109.73 × 13,109.13
4. Step 4: Simplify right side
   22,538.76x = 407,821,494.83
5. Step 5: Solve for x
   x = 407,821,494.83/22,538.76
6. Step 6: Final answer
   x = 18,094.23