Finding the Fourth Proportional to 22,540.41, 31,088.88 and 19,991.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,540.41 : 31,088.88 = 19,991.16 : x
2. Step 2: Convert to fraction form
   22,540.41/31,088.88 = 19,991.16/x
3. Step 3: Cross multiply
   22,540.41x = 31,088.88 × 19,991.16
4. Step 4: Simplify right side
   22,540.41x = 621,502,774.30
5. Step 5: Solve for x
   x = 621,502,774.30/22,540.41
6. Step 6: Final answer
   x = 27,572.82