Finding the Fourth Proportional to 13,298.16, 19,950.65 and 4,978.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,298.16 : 19,950.65 = 4,978.29 : x
2. Step 2: Convert to fraction form
   13,298.16/19,950.65 = 4,978.29/x
3. Step 3: Cross multiply
   13,298.16x = 19,950.65 × 4,978.29
4. Step 4: Simplify right side
   13,298.16x = 99,320,096.50
5. Step 5: Solve for x
   x = 99,320,096.50/13,298.16
6. Step 6: Final answer
   x = 7,468.71