Finding the Fourth Proportional to 10,635.71, 14,697.52 and 7,978.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,635.71 : 14,697.52 = 7,978.51 : x
2. Step 2: Convert to fraction form
   10,635.71/14,697.52 = 7,978.51/x
3. Step 3: Cross multiply
   10,635.71x = 14,697.52 × 7,978.51
4. Step 4: Simplify right side
   10,635.71x = 117,264,196.92
5. Step 5: Solve for x
   x = 117,264,196.92/10,635.71
6. Step 6: Final answer
   x = 11,025.52