Finding the Fourth Proportional to 12,376.12, 18,559.59 and 4,978.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,376.12 : 18,559.59 = 4,978.05 : x
2. Step 2: Convert to fraction form
   12,376.12/18,559.59 = 4,978.05/x
3. Step 3: Cross multiply
   12,376.12x = 18,559.59 × 4,978.05
4. Step 4: Simplify right side
   12,376.12x = 92,390,567.00
5. Step 5: Solve for x
   x = 92,390,567.00/12,376.12
6. Step 6: Final answer
   x = 7,465.23