Finding the Fourth Proportional to 10,826,111.80, 16,243,314.90 and 10,656,076.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,826,111.80 : 16,243,314.90 = 10,656,076.60 : x
2. Step 2: Convert to fraction form
   10,826,111.80/16,243,314.90 = 10,656,076.60/x
3. Step 3: Cross multiply
   10,826,111.80x = 16,243,314.90 × 10,656,076.60
4. Step 4: Simplify right side
   10,826,111.80x = 173,090,007,812,321.34
5. Step 5: Solve for x
   x = 173,090,007,812,321.34/10,826,111.80
6. Step 6: Final answer
   x = 15,988,196.96