Finding the Fourth Proportional to 10,999.42, 16,495.67 and 3,602.23

Step by Step Solution

1. Step 1: Write the proportion equation
   10,999.42 : 16,495.67 = 3,602.23 : x
2. Step 2: Convert to fraction form
   10,999.42/16,495.67 = 3,602.23/x
3. Step 3: Cross multiply
   10,999.42x = 16,495.67 × 3,602.23
4. Step 4: Simplify right side
   10,999.42x = 59,421,165.11
5. Step 5: Solve for x
   x = 59,421,165.11/10,999.42
6. Step 6: Final answer
   x = 5,402.21