Finding the Fourth Proportional to 12,199,821.48, 18,287,833.86 and 5,808,357.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,199,821.48 : 18,287,833.86 = 5,808,357.72 : x
2. Step 2: Convert to fraction form
   12,199,821.48/18,287,833.86 = 5,808,357.72/x
3. Step 3: Cross multiply
   12,199,821.48x = 18,287,833.86 × 5,808,357.72
4. Step 4: Simplify right side
   12,199,821.48x = 106,222,280,982,808.39
5. Step 5: Solve for x
   x = 106,222,280,982,808.39/12,199,821.48
6. Step 6: Final answer
   x = 8,706,871.75