Finding the Fourth Proportional to 31,158.39, 43,003.52 and 19,816.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,158.39 : 43,003.52 = 19,816.06 : x
2. Step 2: Convert to fraction form
   31,158.39/43,003.52 = 19,816.06/x
3. Step 3: Cross multiply
   31,158.39x = 43,003.52 × 19,816.06
4. Step 4: Simplify right side
   31,158.39x = 852,160,332.53
5. Step 5: Solve for x
   x = 852,160,332.53/31,158.39
6. Step 6: Final answer
   x = 27,349.31