Finding the Fourth Proportional to 31,208.67, 43,090.52 and 19,288.35

Step by Step Solution

1. Step 1: Write the proportion equation
   31,208.67 : 43,090.52 = 19,288.35 : x
2. Step 2: Convert to fraction form
   31,208.67/43,090.52 = 19,288.35/x
3. Step 3: Cross multiply
   31,208.67x = 43,090.52 × 19,288.35
4. Step 4: Simplify right side
   31,208.67x = 831,144,935.00
5. Step 5: Solve for x
   x = 831,144,935.00/31,208.67
6. Step 6: Final answer
   x = 26,631.86