Finding the Fourth Proportional to 10,499.10, 15,943.08 and 10,499.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,499.10 : 15,943.08 = 10,499.10 : x
2. Step 2: Convert to fraction form
   10,499.10/15,943.08 = 10,499.10/x
3. Step 3: Cross multiply
   10,499.10x = 15,943.08 × 10,499.10
4. Step 4: Simplify right side
   10,499.10x = 167,387,991.23
5. Step 5: Solve for x
   x = 167,387,991.23/10,499.10
6. Step 6: Final answer
   x = 15,943.08