Finding the Fourth Proportional to 13,144,275.19, 19,698,789 and 10,229,887.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,144,275.19 : 19,698,789 = 10,229,887.31 : x
2. Step 2: Convert to fraction form
   13,144,275.19/19,698,789 = 10,229,887.31/x
3. Step 3: Cross multiply
   13,144,275.19x = 19,698,789 × 10,229,887.31
4. Step 4: Simplify right side
   13,144,275.19x = 201,516,391,613,467.59
5. Step 5: Solve for x
   x = 201,516,391,613,467.59/13,144,275.19
6. Step 6: Final answer
   x = 15,331,114.78