Finding the Fourth Proportional to 38,007.48, 52,449.98 and 21,012.15

Step by Step Solution

1. Step 1: Write the proportion equation
   38,007.48 : 52,449.98 = 21,012.15 : x
2. Step 2: Convert to fraction form
   38,007.48/52,449.98 = 21,012.15/x
3. Step 3: Cross multiply
   38,007.48x = 52,449.98 × 21,012.15
4. Step 4: Simplify right side
   38,007.48x = 1,102,086,938.88
5. Step 5: Solve for x
   x = 1,102,086,938.88/38,007.48
6. Step 6: Final answer
   x = 28,996.58