Finding the Fourth Proportional to 10,405,960.10, 15,608,940.15 and 10,405,960.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,405,960.10 : 15,608,940.15 = 10,405,960.10 : x
2. Step 2: Convert to fraction form
   10,405,960.10/15,608,940.15 = 10,405,960.10/x
3. Step 3: Cross multiply
   10,405,960.10x = 15,608,940.15 × 10,405,960.10
4. Step 4: Simplify right side
   10,405,960.10x = 162,426,008,404,188
5. Step 5: Solve for x
   x = 162,426,008,404,188/10,405,960.10
6. Step 6: Final answer
   x = 15,608,940.15