Finding the Fourth Proportional to 31,776.91, 47,637.05 and 12,069.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,776.91 : 47,637.05 = 12,069.31 : x
2. Step 2: Convert to fraction form
   31,776.91/47,637.05 = 12,069.31/x
3. Step 3: Cross multiply
   31,776.91x = 47,637.05 × 12,069.31
4. Step 4: Simplify right side
   31,776.91x = 574,946,233.82
5. Step 5: Solve for x
   x = 574,946,233.82/31,776.91
6. Step 6: Final answer
   x = 18,093.21