Finding the Fourth Proportional to 31,007.22, 42,774.93 and 18,423.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,007.22 : 42,774.93 = 18,423.06 : x
2. Step 2: Convert to fraction form
   31,007.22/42,774.93 = 18,423.06/x
3. Step 3: Cross multiply
   31,007.22x = 42,774.93 × 18,423.06
4. Step 4: Simplify right side
   31,007.22x = 788,045,101.89
5. Step 5: Solve for x
   x = 788,045,101.89/31,007.22
6. Step 6: Final answer
   x = 25,414.89