Finding the Fourth Proportional to 13,436.04, 18,541.95 and 7,772.07

Step by Step Solution

1. Step 1: Write the proportion equation
   13,436.04 : 18,541.95 = 7,772.07 : x
2. Step 2: Convert to fraction form
   13,436.04/18,541.95 = 7,772.07/x
3. Step 3: Cross multiply
   13,436.04x = 18,541.95 × 7,772.07
4. Step 4: Simplify right side
   13,436.04x = 144,109,333.34
5. Step 5: Solve for x
   x = 144,109,333.34/13,436.04
6. Step 6: Final answer
   x = 10,725.58