Finding the Fourth Proportional to 31,534.56, 47,300.82 and 12,809.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,534.56 : 47,300.82 = 12,809.06 : x
2. Step 2: Convert to fraction form
   31,534.56/47,300.82 = 12,809.06/x
3. Step 3: Cross multiply
   31,534.56x = 47,300.82 × 12,809.06
4. Step 4: Simplify right side
   31,534.56x = 605,878,740.88
5. Step 5: Solve for x
   x = 605,878,740.88/31,534.56
6. Step 6: Final answer
   x = 19,213.17