Finding the Fourth Proportional to 28,238,556.42, 38,967,570.72 and 15,847,492.82

Step by Step Solution

1. Step 1: Write the proportion equation
   28,238,556.42 : 38,967,570.72 = 15,847,492.82 : x
2. Step 2: Convert to fraction form
   28,238,556.42/38,967,570.72 = 15,847,492.82/x
3. Step 3: Cross multiply
   28,238,556.42x = 38,967,570.72 × 15,847,492.82
4. Step 4: Simplify right side
   28,238,556.42x = 617,538,297,198,042.25
5. Step 5: Solve for x
   x = 617,538,297,198,042.25/28,238,556.42
6. Step 6: Final answer
   x = 21,868,621.33