Finding the Fourth Proportional to 10,112.45, 13,955.51 and 5,637.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,112.45 : 13,955.51 = 5,637.15 : x
2. Step 2: Convert to fraction form
   10,112.45/13,955.51 = 5,637.15/x
3. Step 3: Cross multiply
   10,112.45x = 13,955.51 × 5,637.15
4. Step 4: Simplify right side
   10,112.45x = 78,669,317.29
5. Step 5: Solve for x
   x = 78,669,317.29/10,112.45
6. Step 6: Final answer
   x = 7,779.45