Finding the Fourth Proportional to 12,985,818.24, 17,926,168.80 and 7,760,669.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,985,818.24 : 17,926,168.80 = 7,760,669.76 : x
2. Step 2: Convert to fraction form
   12,985,818.24/17,926,168.80 = 7,760,669.76/x
3. Step 3: Cross multiply
   12,985,818.24x = 17,926,168.80 × 7,760,669.76
4. Step 4: Simplify right side
   12,985,818.24x = 139,119,076,118,815.48
5. Step 5: Solve for x
   x = 139,119,076,118,815.48/12,985,818.24
6. Step 6: Final answer
   x = 10,713,154.42