Finding the Fourth Proportional to 12,992.37, 19,476.85 and 4,670.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,992.37 : 19,476.85 = 4,670.43 : x
2. Step 2: Convert to fraction form
   12,992.37/19,476.85 = 4,670.43/x
3. Step 3: Cross multiply
   12,992.37x = 19,476.85 × 4,670.43
4. Step 4: Simplify right side
   12,992.37x = 90,965,264.55
5. Step 5: Solve for x
   x = 90,965,264.55/12,992.37
6. Step 6: Final answer
   x = 7,001.44