Finding the Fourth Proportional to 31,427.55, 43,369.83 and 17,815.53

Step by Step Solution

1. Step 1: Write the proportion equation
   31,427.55 : 43,369.83 = 17,815.53 : x
2. Step 2: Convert to fraction form
   31,427.55/43,369.83 = 17,815.53/x
3. Step 3: Cross multiply
   31,427.55x = 43,369.83 × 17,815.53
4. Step 4: Simplify right side
   31,427.55x = 772,656,507.46
5. Step 5: Solve for x
   x = 772,656,507.46/31,427.55
6. Step 6: Final answer
   x = 24,585.32