Finding the Fourth Proportional to 12,929,894.88, 19,394,939.54 and 5,739,495.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,929,894.88 : 19,394,939.54 = 5,739,495.72 : x
2. Step 2: Convert to fraction form
   12,929,894.88/19,394,939.54 = 5,739,495.72/x
3. Step 3: Cross multiply
   12,929,894.88x = 19,394,939.54 × 5,739,495.72
4. Step 4: Simplify right side
   12,929,894.88x = 111,317,172,479,488.77
5. Step 5: Solve for x
   x = 111,317,172,479,488.77/12,929,894.88
6. Step 6: Final answer
   x = 8,609,286.74