Finding the Fourth Proportional to 31,568.47, 43,562.01 and 18,820.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,568.47 : 43,562.01 = 18,820.69 : x
2. Step 2: Convert to fraction form
   31,568.47/43,562.01 = 18,820.69/x
3. Step 3: Cross multiply
   31,568.47x = 43,562.01 × 18,820.69
4. Step 4: Simplify right side
   31,568.47x = 819,867,085.99
5. Step 5: Solve for x
   x = 819,867,085.99/31,568.47
6. Step 6: Final answer
   x = 25,971.07