Finding the Fourth Proportional to 47,010.88, 64,868.16 and 28,144

Step by Step Solution

1. Step 1: Write the proportion equation
   47,010.88 : 64,868.16 = 28,144 : x
2. Step 2: Convert to fraction form
   47,010.88/64,868.16 = 28,144/x
3. Step 3: Cross multiply
   47,010.88x = 64,868.16 × 28,144
4. Step 4: Simplify right side
   47,010.88x = 1,825,649,495.04
5. Step 5: Solve for x
   x = 1,825,649,495.04/47,010.88
6. Step 6: Final answer
   x = 38,834.62