Finding the Fourth Proportional to 13,185,669.50, 19,868,352.72 and 10,842,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,185,669.50 : 19,868,352.72 = 10,842,015.50 : x
2. Step 2: Convert to fraction form
   13,185,669.50/19,868,352.72 = 10,842,015.50/x
3. Step 3: Cross multiply
   13,185,669.50x = 19,868,352.72 × 10,842,015.50
4. Step 4: Simplify right side
   13,185,669.50x = 215,412,988,149,707.16
5. Step 5: Solve for x
   x = 215,412,988,149,707.16/13,185,669.50
6. Step 6: Final answer
   x = 16,336,901.83