Finding the Fourth Proportional to 31,536.68, 43,520.55 and 17,389.58

Step by Step Solution

1. Step 1: Write the proportion equation
   31,536.68 : 43,520.55 = 17,389.58 : x
2. Step 2: Convert to fraction form
   31,536.68/43,520.55 = 17,389.58/x
3. Step 3: Cross multiply
   31,536.68x = 43,520.55 × 17,389.58
4. Step 4: Simplify right side
   31,536.68x = 756,804,085.87
5. Step 5: Solve for x
   x = 756,804,085.87/31,536.68
6. Step 6: Final answer
   x = 23,997.58