Finding the Fourth Proportional to 12,861,200.91, 19,266,578.16 and 7,458,501

Step by Step Solution

1. Step 1: Write the proportion equation
   12,861,200.91 : 19,266,578.16 = 7,458,501 : x
2. Step 2: Convert to fraction form
   12,861,200.91/19,266,578.16 = 7,458,501/x
3. Step 3: Cross multiply
   12,861,200.91x = 19,266,578.16 × 7,458,501
4. Step 4: Simplify right side
   12,861,200.91x = 143,699,792,472,938.16
5. Step 5: Solve for x
   x = 143,699,792,472,938.16/12,861,200.91
6. Step 6: Final answer
   x = 11,173,123.99