Finding the Fourth Proportional to 40,372, 60,567.72 and 12,670

Step by Step Solution

1. Step 1: Write the proportion equation
   40,372 : 60,567.72 = 12,670 : x
2. Step 2: Convert to fraction form
   40,372/60,567.72 = 12,670/x
3. Step 3: Cross multiply
   40,372x = 60,567.72 × 12,670
4. Step 4: Simplify right side
   40,372x = 767,393,012.40
5. Step 5: Solve for x
   x = 767,393,012.40/40,372
6. Step 6: Final answer
   x = 19,008.05