Finding the Fourth Proportional to 9,886,688.68, 14,824,626.80 and 7,850,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,886,688.68 : 14,824,626.80 = 7,850,429.50 : x
2. Step 2: Convert to fraction form
   9,886,688.68/14,824,626.80 = 7,850,429.50/x
3. Step 3: Cross multiply
   9,886,688.68x = 14,824,626.80 × 7,850,429.50
4. Step 4: Simplify right side
   9,886,688.68x = 116,379,687,483,087.47
5. Step 5: Solve for x
   x = 116,379,687,483,087.47/9,886,688.68
6. Step 6: Final answer
   x = 11,771,351.49