Finding the Fourth Proportional to 11,969,499.78, 16,518,317.31 and 7,078,914.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,969,499.78 : 16,518,317.31 = 7,078,914.18 : x
2. Step 2: Convert to fraction form
   11,969,499.78/16,518,317.31 = 7,078,914.18/x
3. Step 3: Cross multiply
   11,969,499.78x = 16,518,317.31 × 7,078,914.18
4. Step 4: Simplify right side
   11,969,499.78x = 116,931,750,635,498.45
5. Step 5: Solve for x
   x = 116,931,750,635,498.45/11,969,499.78
6. Step 6: Final answer
   x = 9,769,142.64