Finding the Fourth Proportional to 31,475.34, 47,259.54 and 21,010.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,475.34 : 47,259.54 = 21,010.56 : x
2. Step 2: Convert to fraction form
   31,475.34/47,259.54 = 21,010.56/x
3. Step 3: Cross multiply
   31,475.34x = 47,259.54 × 21,010.56
4. Step 4: Simplify right side
   31,475.34x = 992,949,400.74
5. Step 5: Solve for x
   x = 992,949,400.74/31,475.34
6. Step 6: Final answer
   x = 31,546.90