Finding the Fourth Proportional to 31,002.36, 42,710.94 and 21,554.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,002.36 : 42,710.94 = 21,554.52 : x
2. Step 2: Convert to fraction form
   31,002.36/42,710.94 = 21,554.52/x
3. Step 3: Cross multiply
   31,002.36x = 42,710.94 × 21,554.52
4. Step 4: Simplify right side
   31,002.36x = 920,613,810.45
5. Step 5: Solve for x
   x = 920,613,810.45/31,002.36
6. Step 6: Final answer
   x = 29,694.96