Finding the Fourth Proportional to 28,003.98, 42,010.06 and 10,235.52

Step by Step Solution

1. Step 1: Write the proportion equation
   28,003.98 : 42,010.06 = 10,235.52 : x
2. Step 2: Convert to fraction form
   28,003.98/42,010.06 = 10,235.52/x
3. Step 3: Cross multiply
   28,003.98x = 42,010.06 × 10,235.52
4. Step 4: Simplify right side
   28,003.98x = 429,994,809.33
5. Step 5: Solve for x
   x = 429,994,809.33/28,003.98
6. Step 6: Final answer
   x = 15,354.77