Finding the Fourth Proportional to 12,619,301.42, 18,921,386.72 and 5,787,317.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,619,301.42 : 18,921,386.72 = 5,787,317.54 : x
2. Step 2: Convert to fraction form
   12,619,301.42/18,921,386.72 = 5,787,317.54/x
3. Step 3: Cross multiply
   12,619,301.42x = 18,921,386.72 × 5,787,317.54
4. Step 4: Simplify right side
   12,619,301.42x = 109,504,073,245,779.06
5. Step 5: Solve for x
   x = 109,504,073,245,779.06/12,619,301.42
6. Step 6: Final answer
   x = 8,677,506.75