Finding the Fourth Proportional to 17,978.61, 26,970.94 and 5,495.71

Step by Step Solution

1. Step 1: Write the proportion equation
   17,978.61 : 26,970.94 = 5,495.71 : x
2. Step 2: Convert to fraction form
   17,978.61/26,970.94 = 5,495.71/x
3. Step 3: Cross multiply
   17,978.61x = 26,970.94 × 5,495.71
4. Step 4: Simplify right side
   17,978.61x = 148,224,524.73
5. Step 5: Solve for x
   x = 148,224,524.73/17,978.61
6. Step 6: Final answer
   x = 8,244.49