Finding the Fourth Proportional to 10,985.52, 16,473.30 and 4,742.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,985.52 : 16,473.30 = 4,742.60 : x
2. Step 2: Convert to fraction form
   10,985.52/16,473.30 = 4,742.60/x
3. Step 3: Cross multiply
   10,985.52x = 16,473.30 × 4,742.60
4. Step 4: Simplify right side
   10,985.52x = 78,126,272.58
5. Step 5: Solve for x
   x = 78,126,272.58/10,985.52
6. Step 6: Final answer
   x = 7,111.75