Finding the Fourth Proportional to 10,985.35, 15,184.71 and 10,113.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,985.35 : 15,184.71 = 10,113.46 : x
2. Step 2: Convert to fraction form
   10,985.35/15,184.71 = 10,113.46/x
3. Step 3: Cross multiply
   10,985.35x = 15,184.71 × 10,113.46
4. Step 4: Simplify right side
   10,985.35x = 153,569,957.20
5. Step 5: Solve for x
   x = 153,569,957.20/10,985.35
6. Step 6: Final answer
   x = 13,979.52