Finding the Fourth Proportional to 31,356.82, 47,035.05 and 7,664.49

Step by Step Solution

1. Step 1: Write the proportion equation
   31,356.82 : 47,035.05 = 7,664.49 : x
2. Step 2: Convert to fraction form
   31,356.82/47,035.05 = 7,664.49/x
3. Step 3: Cross multiply
   31,356.82x = 47,035.05 × 7,664.49
4. Step 4: Simplify right side
   31,356.82x = 360,499,670.37
5. Step 5: Solve for x
   x = 360,499,670.37/31,356.82
6. Step 6: Final answer
   x = 11,496.69