Finding the Fourth Proportional to 31,755.56, 47,630.78 and 13,030.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,755.56 : 47,630.78 = 13,030.28 : x
2. Step 2: Convert to fraction form
   31,755.56/47,630.78 = 13,030.28/x
3. Step 3: Cross multiply
   31,755.56x = 47,630.78 × 13,030.28
4. Step 4: Simplify right side
   31,755.56x = 620,642,400.02
5. Step 5: Solve for x
   x = 620,642,400.02/31,755.56
6. Step 6: Final answer
   x = 19,544.37