Finding the Fourth Proportional to 12,661,056.72, 18,991,608.84 and 3,076,443.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,661,056.72 : 18,991,608.84 = 3,076,443.36 : x
2. Step 2: Convert to fraction form
   12,661,056.72/18,991,608.84 = 3,076,443.36/x
3. Step 3: Cross multiply
   12,661,056.72x = 18,991,608.84 × 3,076,443.36
4. Step 4: Simplify right side
   12,661,056.72x = 58,426,608,911,535.30
5. Step 5: Solve for x
   x = 58,426,608,911,535.30/12,661,056.72
6. Step 6: Final answer
   x = 4,614,670.81