Finding the Fourth Proportional to 21,613,662.61, 32,368,544.61 and 12,363,590.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,613,662.61 : 32,368,544.61 = 12,363,590.69 : x
2. Step 2: Convert to fraction form
   21,613,662.61/32,368,544.61 = 12,363,590.69/x
3. Step 3: Cross multiply
   21,613,662.61x = 32,368,544.61 × 12,363,590.69
4. Step 4: Simplify right side
   21,613,662.61x = 400,191,436,565,385
5. Step 5: Solve for x
   x = 400,191,436,565,385/21,613,662.61
6. Step 6: Final answer
   x = 18,515,669.64