Finding the Fourth Proportional to 8,919,315.18, 12,308,448.42 and 5,197,908.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,919,315.18 : 12,308,448.42 = 5,197,908.96 : x
2. Step 2: Convert to fraction form
   8,919,315.18/12,308,448.42 = 5,197,908.96/x
3. Step 3: Cross multiply
   8,919,315.18x = 12,308,448.42 × 5,197,908.96
4. Step 4: Simplify right side
   8,919,315.18x = 63,978,194,326,015.84
5. Step 5: Solve for x
   x = 63,978,194,326,015.84/8,919,315.18
6. Step 6: Final answer
   x = 7,172,994.01