Finding the Fourth Proportional to 13,578,870.38, 18,738,270.71 and 7,698,900.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,578,870.38 : 18,738,270.71 = 7,698,900.12 : x
2. Step 2: Convert to fraction form
   13,578,870.38/18,738,270.71 = 7,698,900.12/x
3. Step 3: Cross multiply
   13,578,870.38x = 18,738,270.71 × 7,698,900.12
4. Step 4: Simplify right side
   13,578,870.38x = 144,264,074,579,316.97
5. Step 5: Solve for x
   x = 144,264,074,579,316.97/13,578,870.38
6. Step 6: Final answer
   x = 10,624,158.76