Finding the Fourth Proportional to 9,985.86, 14,978.82 and 3,060.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,985.86 : 14,978.82 = 3,060.36 : x
2. Step 2: Convert to fraction form
   9,985.86/14,978.82 = 3,060.36/x
3. Step 3: Cross multiply
   9,985.86x = 14,978.82 × 3,060.36
4. Step 4: Simplify right side
   9,985.86x = 45,840,581.58
5. Step 5: Solve for x
   x = 45,840,581.58/9,985.86
6. Step 6: Final answer
   x = 4,590.55