Finding the Fourth Proportional to 10,741,128.90, 16,120,506.15 and 10,657,148.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,741,128.90 : 16,120,506.15 = 10,657,148.10 : x
2. Step 2: Convert to fraction form
   10,741,128.90/16,120,506.15 = 10,657,148.10/x
3. Step 3: Cross multiply
   10,741,128.90x = 16,120,506.15 × 10,657,148.10
4. Step 4: Simplify right side
   10,741,128.90x = 171,798,621,487,510.81
5. Step 5: Solve for x
   x = 171,798,621,487,510.81/10,741,128.90
6. Step 6: Final answer
   x = 15,994,466.05