Finding the Fourth Proportional to 12,336,990.77, 18,507,202.60 and 5,146,870.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,336,990.77 : 18,507,202.60 = 5,146,870.82 : x
2. Step 2: Convert to fraction form
   12,336,990.77/18,507,202.60 = 5,146,870.82/x
3. Step 3: Cross multiply
   12,336,990.77x = 18,507,202.60 × 5,146,870.82
4. Step 4: Simplify right side
   12,336,990.77x = 95,254,181,021,768.14
5. Step 5: Solve for x
   x = 95,254,181,021,768.14/12,336,990.77
6. Step 6: Final answer
   x = 7,721,022.31