Finding the Fourth Proportional to 13,466,123.30, 18,583,368.15 and 7,665,278.03

Step by Step Solution

1. Step 1: Write the proportion equation
   13,466,123.30 : 18,583,368.15 = 7,665,278.03 : x
2. Step 2: Convert to fraction form
   13,466,123.30/18,583,368.15 = 7,665,278.03/x
3. Step 3: Cross multiply
   13,466,123.30x = 18,583,368.15 × 7,665,278.03
4. Step 4: Simplify right side
   13,466,123.30x = 142,446,683,609,112.31
5. Step 5: Solve for x
   x = 142,446,683,609,112.31/13,466,123.30
6. Step 6: Final answer
   x = 10,578,150.85