Finding the Fourth Proportional to 31,518.77, 47,281.62 and 12,796.09

Step by Step Solution

1. Step 1: Write the proportion equation
   31,518.77 : 47,281.62 = 12,796.09 : x
2. Step 2: Convert to fraction form
   31,518.77/47,281.62 = 12,796.09/x
3. Step 3: Cross multiply
   31,518.77x = 47,281.62 × 12,796.09
4. Step 4: Simplify right side
   31,518.77x = 605,020,060.61
5. Step 5: Solve for x
   x = 605,020,060.61/31,518.77
6. Step 6: Final answer
   x = 19,195.55