Finding the Fourth Proportional to 20,158,907.81, 30,238,481.99 and 5,012,839.31

Step by Step Solution

1. Step 1: Write the proportion equation
   20,158,907.81 : 30,238,481.99 = 5,012,839.31 : x
2. Step 2: Convert to fraction form
   20,158,907.81/30,238,481.99 = 5,012,839.31/x
3. Step 3: Cross multiply
   20,158,907.81x = 30,238,481.99 × 5,012,839.31
4. Step 4: Simplify right side
   20,158,907.81x = 151,580,651,055,538.72
5. Step 5: Solve for x
   x = 151,580,651,055,538.72/20,158,907.81
6. Step 6: Final answer
   x = 7,519,288.87