Finding the Fourth Proportional to 10,985.02, 16,472.55 and 4,742.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,985.02 : 16,472.55 = 4,742.10 : x
2. Step 2: Convert to fraction form
   10,985.02/16,472.55 = 4,742.10/x
3. Step 3: Cross multiply
   10,985.02x = 16,472.55 × 4,742.10
4. Step 4: Simplify right side
   10,985.02x = 78,114,479.36
5. Step 5: Solve for x
   x = 78,114,479.36/10,985.02
6. Step 6: Final answer
   x = 7,111.00