Finding the Fourth Proportional to 12,987.42, 19,483.02 and 4,665.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,987.42 : 19,483.02 = 4,665.84 : x
2. Step 2: Convert to fraction form
   12,987.42/19,483.02 = 4,665.84/x
3. Step 3: Cross multiply
   12,987.42x = 19,483.02 × 4,665.84
4. Step 4: Simplify right side
   12,987.42x = 90,904,654.04
5. Step 5: Solve for x
   x = 90,904,654.04/12,987.42
6. Step 6: Final answer
   x = 6,999.44