Finding the Fourth Proportional to 12,854,389.88, 17,739,613.46 and 7,696,766.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,854,389.88 : 17,739,613.46 = 7,696,766.72 : x
2. Step 2: Convert to fraction form
   12,854,389.88/17,739,613.46 = 7,696,766.72/x
3. Step 3: Cross multiply
   12,854,389.88x = 17,739,613.46 × 7,696,766.72
4. Step 4: Simplify right side
   12,854,389.88x = 136,537,666,504,592.05
5. Step 5: Solve for x
   x = 136,537,666,504,592.05/12,854,389.88
6. Step 6: Final answer
   x = 10,621,870.64