Finding the Fourth Proportional to 31,633.12, 43,658.22 and 19,700.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,633.12 : 43,658.22 = 19,700.20 : x
2. Step 2: Convert to fraction form
   31,633.12/43,658.22 = 19,700.20/x
3. Step 3: Cross multiply
   31,633.12x = 43,658.22 × 19,700.20
4. Step 4: Simplify right side
   31,633.12x = 860,075,665.64
5. Step 5: Solve for x
   x = 860,075,665.64/31,633.12
6. Step 6: Final answer
   x = 27,189.09