Finding the Fourth Proportional to 31,342.32, 47,015.91 and 13,574.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,342.32 : 47,015.91 = 13,574.16 : x
2. Step 2: Convert to fraction form
   31,342.32/47,015.91 = 13,574.16/x
3. Step 3: Cross multiply
   31,342.32x = 47,015.91 × 13,574.16
4. Step 4: Simplify right side
   31,342.32x = 638,201,484.89
5. Step 5: Solve for x
   x = 638,201,484.89/31,342.32
6. Step 6: Final answer
   x = 20,362.29