Finding the Fourth Proportional to 31,355.51, 47,035.89 and 7,981.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,355.51 : 47,035.89 = 7,981.88 : x
2. Step 2: Convert to fraction form
   31,355.51/47,035.89 = 7,981.88/x
3. Step 3: Cross multiply
   31,355.51x = 47,035.89 × 7,981.88
4. Step 4: Simplify right side
   31,355.51x = 375,434,594.49
5. Step 5: Solve for x
   x = 375,434,594.49/31,355.51
6. Step 6: Final answer
   x = 11,973.48