Finding the Fourth Proportional to 31,300.44, 43,186.88 and 18,556.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,300.44 : 43,186.88 = 18,556.61 : x
2. Step 2: Convert to fraction form
   31,300.44/43,186.88 = 18,556.61/x
3. Step 3: Cross multiply
   31,300.44x = 43,186.88 × 18,556.61
4. Step 4: Simplify right side
   31,300.44x = 801,402,089.28
5. Step 5: Solve for x
   x = 801,402,089.28/31,300.44
6. Step 6: Final answer
   x = 25,603.54