Finding the Fourth Proportional to 9,074,021.18, 12,519,462.88 and 5,399,992.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,074,021.18 : 12,519,462.88 = 5,399,992.40 : x
2. Step 2: Convert to fraction form
   9,074,021.18/12,519,462.88 = 5,399,992.40/x
3. Step 3: Cross multiply
   9,074,021.18x = 12,519,462.88 × 5,399,992.40
4. Step 4: Simplify right side
   9,074,021.18x = 67,605,004,404,082.12
5. Step 5: Solve for x
   x = 67,605,004,404,082.12/9,074,021.18
6. Step 6: Final answer
   x = 7,450,390.85