Finding the Fourth Proportional to 31,916, 47,881.72 and 10,028

Step by Step Solution

1. Step 1: Write the proportion equation
   31,916 : 47,881.72 = 10,028 : x
2. Step 2: Convert to fraction form
   31,916/47,881.72 = 10,028/x
3. Step 3: Cross multiply
   31,916x = 47,881.72 × 10,028
4. Step 4: Simplify right side
   31,916x = 480,157,888.16
5. Step 5: Solve for x
   x = 480,157,888.16/31,916
6. Step 6: Final answer
   x = 15,044.43