Finding the Fourth Proportional to 13,538,411.97, 18,682,898.72 and 7,343,443.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,538,411.97 : 18,682,898.72 = 7,343,443.28 : x
2. Step 2: Convert to fraction form
   13,538,411.97/18,682,898.72 = 7,343,443.28/x
3. Step 3: Cross multiply
   13,538,411.97x = 18,682,898.72 × 7,343,443.28
4. Step 4: Simplify right side
   13,538,411.97x = 137,196,806,926,172.89
5. Step 5: Solve for x
   x = 137,196,806,926,172.89/13,538,411.97
6. Step 6: Final answer
   x = 10,133,892.16