Finding the Fourth Proportional to 10,453.76, 14,427.21 and 5,978.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,453.76 : 14,427.21 = 5,978.17 : x
2. Step 2: Convert to fraction form
   10,453.76/14,427.21 = 5,978.17/x
3. Step 3: Cross multiply
   10,453.76x = 14,427.21 × 5,978.17
4. Step 4: Simplify right side
   10,453.76x = 86,248,314.01
5. Step 5: Solve for x
   x = 86,248,314.01/10,453.76
6. Step 6: Final answer
   x = 8,250.46