Finding the Fourth Proportional to 31,510.74, 47,263.51 and 10,443.90

Step by Step Solution

1. Step 1: Write the proportion equation
   31,510.74 : 47,263.51 = 10,443.90 : x
2. Step 2: Convert to fraction form
   31,510.74/47,263.51 = 10,443.90/x
3. Step 3: Cross multiply
   31,510.74x = 47,263.51 × 10,443.90
4. Step 4: Simplify right side
   31,510.74x = 493,615,372.09
5. Step 5: Solve for x
   x = 493,615,372.09/31,510.74
6. Step 6: Final answer
   x = 15,664.99