Finding the Fourth Proportional to 13,040,485.99, 17,994,967.86 and 7,238,809.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,040,485.99 : 17,994,967.86 = 7,238,809.15 : x
2. Step 2: Convert to fraction form
   13,040,485.99/17,994,967.86 = 7,238,809.15/x
3. Step 3: Cross multiply
   13,040,485.99x = 17,994,967.86 × 7,238,809.15
4. Step 4: Simplify right side
   13,040,485.99x = 130,262,137,981,082.03
5. Step 5: Solve for x
   x = 130,262,137,981,082.03/13,040,485.99
6. Step 6: Final answer
   x = 9,989,055.48